FAQ

Life insurance is available after cardiac arrest and with an ICD, but it will typically be more expensive than standard rates and some providers may decline certain types of cover. The market varies considerably between insurers, so it is important to shop around and use a specialist broker where possible.

When applying for life insurance, you are required to disclose your medical history, including your cardiac arrest and any devices or conditions. Failing to disclose is likely to make any claim invalid. Insurers will usually ask for details of the event, the cause, your current medications, device type, and the results of your most recent cardiac review.

Some policies may be available at standard rates, particularly if the cardiac arrest occurred some years ago, the cause has been fully treated, you have a well-functioning ICD, and there are no other significant health conditions. Others will be offered at "loaded" (increased) premiums, or with exclusions for cardiac-related claims.

For those who cannot obtain standard life insurance, options include over-50s guaranteed acceptance plans (which do not require medical questions but typically pay a fixed sum) and specialist insurers who focus on people with pre-existing medical conditions.

The British Heart Foundation produces guidance on insurance for people with heart conditions. Specialist financial advisers experienced in this area can help identify the most suitable options.

A cardiac arrest does not mean life insurance is impossible — it means you need to look harder and possibly pay more.

Category: Implantable Devices

Moderate alcohol consumption is generally considered safe for most people with ICDs, but there are some important considerations.

Alcohol can affect heart rhythm. Even in healthy people, heavy alcohol consumption can trigger atrial fibrillation ("holiday heart") and, in people with certain underlying conditions, ventricular arrhythmias. For people with inherited arrhythmia conditions such as Brugada Syndrome, alcohol — particularly in large quantities — can be a recognised trigger for dangerous arrhythmias and should be avoided or very strictly limited.

For most ICD patients, the general advice is to drink sensibly and within the recommended UK guidelines (no more than 14 units per week, spread across three or more days, with alcohol-free days). Binge drinking should be avoided.

Alcohol can also interact with some cardiac medications. For example, certain antiarrhythmic drugs and blood-pressure medications are affected by alcohol. Ask your pharmacist or cardiac team about any specific interactions with your medications.

If you are unsure what is safe for your specific condition, discuss it with your cardiologist or device clinic. They can advise based on your diagnosis, your device settings, and the medications you take.

Category: Implantable Devices

Catecholaminergic Polymorphic Ventricular Tachycardia (CPVT) is a rare inherited arrhythmia syndrome in which the heart is structurally normal but specific triggers — particularly physical exertion or emotional stress — can provoke dangerous ventricular arrhythmias. These can cause palpitations, blackouts, or sudden cardiac arrest.

CPVT is caused by mutations affecting calcium regulation within heart muscle cells, most commonly in the RYR2 gene. It typically presents in childhood or adolescence and can cause sudden cardiac arrest in young people who appear otherwise completely healthy. A standard resting ECG may be normal; an exercise stress test often reveals the characteristic bidirectional ventricular tachycardia.

Treatment includes beta-blockers to reduce the risk of arrhythmias triggered by adrenaline, strict avoidance of competitive and high-intensity exercise, and in many cases ICD implantation. Some patients are also treated with flecainide.

Because CPVT is inherited, family screening is essential following a diagnosis. First-degree relatives should be assessed with an exercise stress test as well as a resting ECG and echocardiogram, as the resting ECG may appear entirely normal even in affected individuals.

Category: Implantable Devices

Hypertrophic Cardiomyopathy (HCM) is the most common inherited heart muscle condition. In HCM, the walls of the heart — most often the left ventricle — become abnormally thickened (hypertrophied), which can obstruct blood flow, cause the heart to pump less efficiently, and create dangerous arrhythmias.

HCM affects approximately 1 in 500 people and is a leading cause of sudden cardiac death in young people, including young athletes. Many people with HCM have no symptoms at all; others experience breathlessness, chest pain, palpitations, or blackouts. In some cases, the first sign of HCM is a cardiac arrest.

HCM is caused by mutations in genes that encode the proteins of the heart muscle, most commonly MYH7 and MYBPC3. It is inherited in an autosomal dominant pattern, meaning each first-degree relative of someone with HCM has a 50% chance of carrying the same gene variant.

Treatment depends on symptoms and risk profile and may include medication (beta-blockers, calcium channel blockers), a procedure called septal reduction therapy (to reduce obstruction), and ICD implantation for those at high risk of sudden cardiac arrest.

Family screening — with ECG, echocardiogram, and genetic testing — is strongly recommended for all first-degree relatives.

Category: Inherited Conditions

Brugada Syndrome is an inherited heart condition in which the heart’s electrical system malfunctions despite the heart having a normal structure. It is caused by mutations affecting sodium channels in heart cells — most commonly in the SCN5A gene — and produces a characteristic pattern on an ECG. People with Brugada Syndrome are at risk of dangerous ventricular arrhythmias (abnormal heart rhythms), which can cause sudden cardiac arrest, most often at rest or during sleep.

Brugada Syndrome is more common in men and in people of South-East Asian descent. It may be diagnosed after an unexplained cardiac arrest, after an abnormal ECG is found incidentally, or through family screening following a diagnosis in a relative.

The main treatment for those considered at high risk is an ICD (implantable cardioverter defibrillator), which can detect and terminate life-threatening arrhythmias. Certain medications and substances — including some antidepressants, sodium channel-blocking drugs, and large amounts of alcohol — can trigger arrhythmias in Brugada Syndrome and should be discussed with your cardiologist.

Because Brugada Syndrome is inherited, first-degree relatives (parents, siblings, and children) of anyone diagnosed should be offered cardiac screening.

Category: Implantable Devices

Bioimpedance analysis (BIA) is a commonly used method to estimate body composition by sending a low-level electrical current through the body. Manufacturers have traditionally recommended that patients with implanted cardiac devices like pacemakers, implantable cardioverter defibrillators (ICDs), or cardiac resynchronisation therapy devices (CRT-Ds) avoid BIA due to concerns about potential interference.

However, a small study published in 2012 evaluated 20 patients with heart failure who had either an ICD or CRT-D device implanted. The researchers performed BIA on these patients while monitoring their devices in real time. They found no evidence of any interference from the BIA, including no telemetry disruption, no oversensing on the device leads, and no symptoms experienced by the patients.

While this study suggests BIA may be safe in patients with certain cardiac implants, the researchers noted that further confirmatory studies with larger patient groups are still needed. As always, it’s best to consult your doctor or cardiac electrophysiologist before undergoing any procedures or tests if you have an implanted cardiac device.

Category: Electromagnetic interference

There is theoretically a risk of damage to the ICD/lead from an electric shock from UK mains buts it’s extremely unlikely and it would be classed as a very low risk. 

This is because the current tends not to pass through the ICD/lead but passes through the body to the ground using the shortest and quickest route e.g. hand, up the arm, down the torso, and out through the leg. The majority of devices also have circuitry built in to protect them against electrical surges. 

The advice would be to go to the hospital if a person was feeling unwell, otherwise, it would be recommended that a person contact their local device clinic and request a device check which could be performed as a remote transmission. This would pick up on any rare issues caused and provide reassurance.

Category: Implantable Devices

Doctors use the following guidelines from the DVLA to help them assess whether someone is medically fit to drive.

DVLA Guidelines for assessing fitness to drive for medical professionals

Category: Implantable Devices

When the heart is restarted after a cardiac arrest, recovery is not immediate. Admission to the hospital is always required for further treatment and investigation to establish the cause. Provided good CPR has been performed while the heart has stopped and defibrillation has been carried out promptly, the outlook is promising with most patients making a good recovery.

Category: Treatment

Also known as Targeted Temperature Management (TTM). Following cardiac arrest, some patients who remain unconscious after successful resuscitation may be treated with controlled cooling, in which the body temperature is lowered to 32–36ºC. This reduces the brain’s oxygen requirements, decreases swelling, and limits the release of substances that can cause cell death, helping to protect the brain and other organs during recovery.

Targeted temperature management is supported by the European Resuscitation Council (ERC) and ILCOR guidelines and is a standard component of post-resuscitation care in many UK ICUs. The specific temperature target is determined by the clinical team based on the individual patient’s condition.

TTM has been shown to improve neurological outcomes and survival in patients who remain in a coma after cardiac arrest.

Category: Cardiac Arrest

A computer inside the AED analyzes the victim’s heart rhythm. The device determines whether a shock is needed. Some devices shock the victim automatically if a shock is needed. Other devices require that the operator press a button to deliver the shock. The shock is delivered through pads applied to the victim’s bare chest. The shock stuns the heart, stopping abnormal heart activity and allowing a normal heart rhythm to resume.

Category: Implantable Devices

A wearable cardioverter defibrillator (WCD) is prescribed for patients at risk of SCA. It consists of a garment, an electrode belt, and a monitor. While some defibrillator devices are implanted under the skin, the wearable defibrillator is worn under the clothes, directly against the patient’s skin.

Category: Implantable Devices

An implantable cardioverter-defibrillator (ICD) is a battery-powered device placed under the skin to monitor the heart rate. If an abnormal heart rhythm is detected (i.e., the heart is beating chaotically or too fast), the device will deliver a shock to restore a normal heartbeat. ICDs can prevent cardiac arrest in high-risk patients.

Category: Cardiac Arrest

Ejection fraction (EF) refers to how well the heart is pumping. It’s the percentage of blood that is pumped out of the heart’s main pumping chamber during each heartbeat. If the EF is low (35% or lower), the person is at increased risk for sudden cardiac death. It is important to know that the EF can change over time.

Category: Implantable Devices

Maintain at least the recommended distance between the item and your heart device:

30cm (12 inches) distance

Car or motorcycle – from ignition system components
Electric fence
Electric pet containment fence – from buried wire and indoor antenna
Electrical transformer box

60cm (2 feet) distance

Metal detector – from the search head
Induction hob

Not recommended

Abdominal muscle stimulator (TENS-type ab belt)
Electronic body fat scale
Magnetic mattress pad or pillow

Category: Implantable Devices

Maintain at least a 15cm (6 inch) distance between the item and your heart device:

Electric golf buggy – from motor
Hand-held electric kitchen appliances (electric whisk, electric knife)
Electric shaver – corded
Electric toothbrush charging base
Exercise bike – from magnet in wheel
Hair dryer – hand-held
Hand-held back massager
Magnetic therapy products
Radio-controlled items – from antenna
Sewing machine – from motor
Small household magnet
Speakers
Tattoo machine
Treadmill – from motor
Ultrasonic pest repeller
Vacuum cleaner – from motor

Category: Implantable Devices

If used as intended and in good working condition, the following items carry no known risk for ICD patients:

Battery charger (household batteries)
CD, DVD, or Blu-ray player
Curling tongs
Dishwasher
Electric blanket
Electric guitar
Electric toothbrush
Electronic scales
Garage door opener
Hair straighteners
Heating pad
Hot tub
Air purifier
Iron
Kitchen appliances – small and large (blender, tin opener, fridge, cooker, toaster)
Massage chair or pad
Medical alert necklace
Microwave oven
Remote controls (TV, streaming device)
Salon hood hair dryer
Sauna
Battery-powered shaver or trimmer
Sunbed
Television

Category: Implantable Devices

The electromagnetic energy generated by a chainsaw is similar to other electric and liquid fuel-powered tools. If electromagnetic interference occurs with your heart device and you experience symptoms such as becoming dizzy or lightheaded, a running chainsaw may present a higher risk of injury to you than other power tools.

Category: Implantable Devices

Yes, but exercise extreme caution at all times. Follow the safety precautions below to minimise the risk of interference with your heart device while using a chainsaw.

• Maintain at least 15cm (6 inches) between the motor of an electric chainsaw and your heart device
• Ensure the equipment is properly earthed
• Maintain at least 30cm (12 inches) between the ignition system components of a petrol chainsaw and your heart device. Where possible, use a model with the spark plug positioned away from the handgrips
• Stop cutting and switch off the chainsaw immediately if you feel lightheaded, dizzy, or believe your ICD has delivered a shock
• Do not work on the engine while it is running
• Do not touch the coil, distributor, or spark plug leads of a running engine

Category: Implantable Devices

It is recommended you avoid using welding currents above 160 amps. If welding with currents under 160 amps, follow the precautions below to minimise the risk of interference with your heart device.

Welding safety precautions

Limit welding to currents below 160 amps
Work in a dry area wearing dry gloves and footwear
Maintain at least 60cm (2 feet) between the welding arc and your heart device
Keep welding cables close together and as far from your device as possible. Position the welding unit approximately 1.5 metres (5 feet) from the work area
Connect the earth clamp to the metal as close to the point of welding as possible
Wait a few seconds between attempts when having difficulty starting a weld
Ensure firm footing and adequate space to move freely
Work with someone else who is aware of your condition
Stop welding immediately and move away from the area if you feel lightheaded, dizzy, or believe your ICD has delivered a shock

As welding equipment may temporarily affect your heart device, any decision to use welding equipment should be made in consultation with your cardiologist or device clinic. Protective aprons and vests will not shield your device from electromagnetic interference generated by welding equipment.

Category: Implantable Devices

Unlike most other household power tools, welding with currents above 160 amps may have a higher tendency to temporarily affect the normal function of your pacemaker or implantable defibrillator.

Category: Electromagnetic interference

Even though most electromagnetic fields in the home environment will rarely affect the function of a pacemaker or ICD, it is recommended you keep any item containing magnets at least 15cm (6 inches) away from your device.

The reason for this is that there is a small magnetically activated switch built into pacemakers and ICDs. This internal switch is designed to close when a magnet of sufficient strength is placed over it.

When the switch closes in a pacemaker, the device paces the heart at a fixed pre-set rate (which may differ from your programmed settings).

When the switch closes in an ICD, it prevents the device from delivering treatment therapies.

You may not always know whether an item contains a magnet. However, if household items are used as intended and properly maintained, they should have no effect on your heart device. This includes microwaves, kitchen appliances, cordless phones, radios, televisions, computers, hair dryers, electric shavers, electric toothbrushes, electric blankets, and small power tools.

If you accidentally place a magnet too close to your device, simply move the item away. The pacemaker or ICD will return to its normal programmed settings once the magnet is removed.

The use of magnetic mattress pads and pillows is not recommended as it would be difficult to maintain a 15cm (6 inch) separation from your device at all times.

Category: Implantable Devices

Given the short duration of security screening, it is unlikely that your heart device will be affected by metal detectors (walk-through archways or hand-held wands) or full-body imaging scanners (millimetre wave or 3D imaging scanners) such as those found at airports, concert venues, and courts.

The metal casing of your heart device may set off a metal detector. To minimise any risk of interference, avoid touching metal surfaces around screening equipment, and walk through archways at a normal pace without stopping or lingering.

If a hand-held wand is used, ask the security officer not to hold or wave it directly over the area where your device is implanted. You can request a manual pat-down search as an alternative. Show your device ID card if you have it. If you have any concerns, explain your situation to security personnel and follow their instructions.

Category: Implantable Devices

Yes. Anti-theft security systems in shops and libraries generate electromagnetic fields that detect embedded tags on merchandise. Under unusual circumstances, these fields could temporarily affect the operation of your heart device, but significant interference is unlikely if you walk through normally.

It is recommended that you:

Be aware of anti-theft detector gates as you enter and leave
Walk through at a normal pace and do not linger near the equipment
If you experience any symptoms such as dizziness or palpitations near a security system, move away promptly. Your device will resume normal operation once you are clear of the equipment.

Category: Electromagnetic interference

Prior to any scan, your doctor should determine whether there is an effect on your heart device.

See our MRI Compatibility page for more information.

Category: Implantable Devices

Your doctor should discuss all potential benefits and risks of an MRI scan with you. Present your ID card to the doctor recommending the MRI scan. If needed, your doctor can seek more information from the manufacturer of your ICD.

Category: Implantable Devices

You should speak with your doctor regarding this situation.

Many modern ICDs and leads are compatible with MRI scanners and many are retrospectively approved.

See our MRI Compatibility page for more information.

Category: Treatment

Many modern devices and leads are now MRI compatible but older ones are often not.

You can get more information about how to check by going to our MRI Compatibility page.

Category: Implantable Devices

Generally, your device will not keep you from most activities and hobbies (e.g., bowling, golfing, playing tennis, gardening, fishing, etc.).

Category: Implantable Devices

Many people with an ICD or CRT-D resume their normal daily activities after full recovery from surgery. However, there may be certain situations that your doctor will ask you to avoid. Your doctor or nurse will provide guidance for your particular condition.

Category: Implantable Devices

Cardiac resynchronization therapy (CRT) helps restore a normal heart rhythm by pacing both sides of the heart. CRT delivers a steady pattern of small electrical pulses to the heart muscle through the leads. These small pulses encourage the heart to beat in a regular rhythm.

Category: Implantable Devices

An ICD or CRT-D is implanted to help you live as normal a life as possible. An ICD provides round-the-clock protection against sudden cardiac arrest (SCA). A CRT-D helps the heart pump more effectively whilst also providing protection against SCA. It may help to share information from this website with your partner, and to encourage them to attend clinic appointments with you so they can ask questions and feel more informed.

Category: Implantable Devices

Patients who meet the criteria for an ICD are at higher risk of sudden cardiac arrest (SCA). An ICD is implanted to help protect against this risk. Without an ICD, a life-threatening arrhythmia such as ventricular fibrillation may not be treated in time for the person to survive. You should discuss the risks of not having an ICD with your cardiologist or electrophysiologist, who can explain the benefits in the context of your specific condition.

Category: Implantable Devices

Yes. A hearing aid worn in the ear will not interfere with an ICD. If the hearing aid has any wireless accessories, such as a Bluetooth streamer worn around the neck, keep the accessory at least 15cm (6 inches) away from your device.

Category: Implantable Devices

An electronic cigarette will not interfere with an ICD.

Category: Implantable Devices

ICDs connect to different chambers of the heart with 1 to 3 leads. The device and each lead are programmed individually based on your needs. Talk to your doctor if a lead needs to be turned off and how that may impact ICD therapy.

Category: Implantable Devices

When using a powered hand tool, whether battery-powered or electric, keep the tool’s motor at least 15cm (6 inches) away from your device.

Category: Implantable Devices

Yes, you can use a heating pad. They have no known effect on ICDs.

Category: Implantable Devices

Yes, it could. Your mobile phone, as well as any accessories containing magnets (such as earbuds or cases with magnetic clasps), should be kept at least 15cm (6 inches) away from your device.

Category: Implantable Devices

Not all ICDs can vibrate and when they do it is usually a patient alert feature.

You can find out more about alerts on our ICD Sounds and Alerts page.

Category: Implantable Devices

In most cases, you can undergo laser hair removal. Check with your doctor and the manufacturer of your ICD.

Category: Electromagnetic interference

No, it is ok to sleep on your side as you normally would.

Category: Implantable Devices

Your heart device can be programmed to make a beeping tone when something has happened that your doctor needs to be aware of. If you hear a beeping tone, contact your doctor. Your doctor can discuss with you what has happened. Your doctor can also program your heart device to send heart information automatically through a wireless device to your clinic. Your doctor will explain the type of wireless device that will be used to send your heart information.

Category: Implantable Devices

This could be due to factors such as device size or your body structure. Discuss this situation with your doctor.

Category: Implantable Devices

They may feel something if you are touching them when you receive a shock, just as they might if you were touching out of the water. They will not be affected differently because you are in a pool.

Category: Implantable Devices

There are four main companies that make defibrillators, including Medtronic, Boston Scientific, St. Jude Medical (Abbott) and Biotronik. Several smaller companies also manufacture ICDs.

Category: Implantable Devices

Lead perforation is a potential complication occurring rarely in heart device implant procedures. It occurs when a lead pokes through the heart wall instead of embedding into the heart wall muscle.

Category: Implantable Devices

DDD and VVI are pacemaker therapy modes that your doctor can program in your device. These are just two of many options. Each letter indicates something different (A=Atrium; V=Ventricle; D=Dual or both A and V; and O=none). The first letter indicates the chamber of the heart being paced. The second letter is the heart chamber being sensed. The third letter indicates how the device should respond when it senses a cardiac event (T=Triggered; I=Inhibited; D=Trigger or Inhibit; and O=none). Finally, the fourth letter, usually “R”, means that the rate response in the device is turned on (R=Rate Modulation on; O or blank = none or no rate modulation).

Category: Implantable Devices

It is generally not necessary to turn off an ICD when a woman is delivering a baby. Talk to your doctor about your specific medical situation.

Category: Implantable Devices

Depending on your body structure and the size of your ICD, you may see the device under your skin. The bump will be about the same size as the ICD and may be visible if you wear strapless clothing. The scar is typically about 2 inches long, just below the collarbone.

Category: Implantable Devices

Bras with underwires will not affect your ICD. However, the strap from any bra may cause discomfort at the implant site until the incision heals from the surgery.

Category: Implantable Devices

ICDs are programmed to meet a person’s needs. Typically, an ICD will be set to deliver 20-35 joules per shock. Talk to your doctor to discuss how your ICD is programmed.

Category: Implantable Devices

When your heart device is implanted, your doctor threads one end of the lead through a vein into your heart, attaching the lead tip to the heart wall. Your doctor then connects the other end of the lead to your heart device.

Category: Implantable Devices

Always carry your heart device ID card. This card is helpful if your heart device sets off a metal detector or a security system.

Category: Implantable Devices

The amount of battery used to deliver a shock depends on the specific ICD manufacturer and model, as well as the amount of energy your device is programmed to deliver. When longevity is estimated for ICDs, the frequency of device charging is included.

Category: Implantable Devices

Most ICDs today have both pacing therapies as well as defibrillation capabilities, so only one device is needed.

Category: Implantable Devices

Remember to discuss exercise with your doctor and follow any recommendations based on your health needs.

Category: Implantable Devices

Your ICD has an outer case, a battery, a small computer, and a connector block at the top of the case that connects the device to the leads. All electronic parts are sealed inside a metal case, sometimes called a “can,” made of titanium.

Category: Implantable Devices

A pacemaker contains a very small computer that controls the pacemaker operation. It is powered by a tiny lithium battery. All electronic components of your pacemaker are sealed inside a metal case made of titanium.

Category: Implantable Devices

Yes. Many people with ICDs and pacemakers choose to wear a medical ID bracelet or necklace alongside their device ID card. A medical ID can alert emergency responders to your device if you are unable to communicate. You can search online for suppliers of medical ID jewellery — several companies specialise in engraved medical alert products. Your local pharmacy may also stock basic options.

Category: Implantable Devices

It is common to have some soreness and tenderness at the incision site for several days after the procedure. There also may be some bruising. Healing of the incision is usually complete within 7 to 14 days. Your doctor may place restrictions on lifting and activities for several weeks following your surgery to allow for complete healing.

Category: Implantable Devices

A body fat scale estimates percentage of body fat by passing electrical current through the body. Because this current may interfere with your ICD, it is recommended you contact your device manufacturer for a list of acceptable BMI scales.

Category: Implantable Devices

Remote monitoring is an option that many people find convenient because it can decrease the number of clinic visits for follow-up. These days, some heart devices can even be monitored via an app on a patient’s smartphone. Discuss this option with your doctor to see if it’s right for you.

Category: Implantable Devices

It is unlikely that you will receive recalled leads. But check with the lead manufacturer or your doctor if you have concerns.

Category: Implantable Devices

ICDs connect to the different chambers of your heart using 1 to 3 leads. Your doctor will determine the number of leads implanted based on your individual needs.

Category: Implantable Devices

Most people are aware of getting an ICD shock and each describes the event differently. Those who are awake during a therapy shock describe it as a “kick in the chest.” The shock startles them, but the feeling passes quickly. Some find it fleeting but still distressing. Others find the therapy shock a reassuring reminder that their heart device is protecting them from sudden cardiac arrest. Some people lose consciousness because of a rapid heartbeat, and they are not aware they received a therapy shock.

Category: Implantable Devices

Each patient describes an ICD shock differently. Some say it feels like a thump on the chest while others compare it to being kicked in the chest. It is normal to feel apprehensive, but also remember that a defibrillating shock from an ICD can be lifesaving. For most people, if there is pain, it quickly passes.

Category: Shock

Talk to your doctor or nurse about a “shock plan”— – what you should do if your heart device delivers a therapy shock.

Your doctor or nurse should give you specific instructions about when to contact your doctor if you have received a therapy shock.

In general, follow these steps if you feel the symptoms of a rapid heart rhythm or if you receive a therapy shock.

Category: Implantable Devices

You should talk to your doctor about any symptoms you are having.

Some devices can provide pacing or anti-tachycardia therapy and this may be felt by some.

Some devices also have patient alert features, such as making a beep or vibrating.

Check out our Sounds and Alerts page for more information.

Category: Implantable Devices

Always carry your heart device ID card. This card is helpful if your heart device sets off a metal detector or a security system.

Category: Implantable Devices

Your doctor will discuss any restrictions to activities that may be necessary after you have healed from your surgery. It is unlikely that your ICD will affect your playing the cello.

Category: Implantable Devices

An ICD can be implanted on either side of the chest, depending on a person’s unique anatomy. Talk to your doctor about your concerns.

Category: Implantable Devices

Each ICD manufacturer may have proprietary components and unique patented therapies, resulting in many variations among their devices. There may be differences in features such as battery longevity, size and shape, available therapies, and remote monitoring services. Your doctor will decide/recommend what’s right for you.

Category: Implantable Devices

Each patient describes an ICD shock differently. Some say it feels like a thump on the chest while others compare it to being kicked in the chest. It is normal to feel apprehensive, but also remember that a defibrillating shock from an ICD can be lifesaving. For most people, if there is pain, it quickly passes.

Category: Implantable Devices

Some people wrap a towel around the seat belt. You also may want to check out seat belt pads.

Check out our ICD Protection page for information on commercial products to protect your ICD

Category: Implantable Devices

Some physical activities may be restricted depending on your medical condition or concerns about physical stress on your ICD. Consult with your doctor about activities to avoid, if any.

Category: Implantable Devices

Your doctor will determine what conditions will trigger an alert. Ask your doctor to explain what the alerts mean in your particular case. The beeping tone is designed to get your attention, not to alarm you. If you hear beeping tones from your heart device, call your doctor for instructions. The alert sounds will continue until your doctor checks your device at the clinic and programs the alert off.

Check out the Sounds and Alerts page for more information.

Category: Implantable Devices

The shocking capability of your ICD can be deactivated if you wish. Consult with your doctor.

Category: Implantable Devices

Any transmitting sound amplifier should be kept at least 6 inches from your ICD.

Category: Implantable Devices

Wherever you travel, your heart device monitors your heart and provides therapy whenever it is needed. You can travel knowing that support for your heart device is available around the world. Your doctor may also be able to check your heart device remotely, so it may be a good idea to let your doctor know when and where you will be traveling.

Category: Implantable Devices

It is possible to have both an ICD and a vagal nerve stimulator. Some precautions may be necessary, however. Consult with your doctor.

Category: Implantable Devices

Depending on your specific ICD model, pressure ratings can vary. Check with your doctor and the ICD manufacturer for more information.

Category: Implantable Devices

Some heart problems do run in families but that does not mean all family members will have the same problems or need the same type of therapy. Be sure to talk to your doctor for more information.

Category: Implantable Devices

Long-term monitoring of ICD performance has shown that defibrillating a patient in sudden cardiac arrest is 98% effective in stopping the Sudden Cardiac Arrest (SCA).1,2

References:
1- Zipes DP, Roberts D, for the Pacemaker-Cardioverter-Defibrillator investigators. Results of the International Study of the Implantable Pacemaker Cardioverter-Defibrillator: A Comparison of Epicardial and Endocardial Lead Systems. Circulation. July 1, 1995;92(1):59-65.
2- Volosin, et. al. Virtual ICD: A Model to Evaluate Shock Reduction Strategies. Heart Rhythm. 2010;May Suppl:PO3-125.

Category: Implantable Devices

Leads are placed in the hostile environment of the human body, making it hard to predict longevity. Your doctor will regularly monitor your device and lead function for any signs of malfunction.

Category: Implantable Devices

How an ICD looks in the body depends on individual anatomy and where the device is placed. Typically, there is a small bump under your skin.

Category: Implantable Devices

Most likely, you will not hear anything before a shock. If an ICD senses an event that requires a shock, it responds immediately, leaving no time for any warning signals.

Category: Shock

Your ICD is designed to deliver therapies that progress from the mildest form to be effective to an actual shock. If you receive a shock from your ICD, you will feel an obvious electrical jolt to your body, but each patient describes an ICD shock differently. Some say it feels like a thump on the chest, while others compare it to being kicked in the chest. It is normal to feel apprehensive, but also remember that a defibrillating shock from an ICD can be lifesaving. For most people, if there is pain, it quickly passes.

Category: Implantable Devices

If you receive a shock during intercourse, stop and notify your doctor just as you would if it happened during exercise. Your partner will not be hurt by the shock. He or she may feel a tingle or a slight muscle spasm, but nothing more.

Category: Implantable Devices

You will probably not need new leads. However, your doctor will test your existing leads before, during and after your surgery. If tests indicate that it’s time for new leads, they will be replaced along with your ICD.

Category: Implantable Devices

Most likely not. An ICD replacement is usually same-day surgery unless your surgeon replaces or adds a new lead. Then you may spend a day or two enjoying hospital food.

Category: Implantable Devices

No. ICDs are designed for single-patient use only and must not be reused. This is a regulatory requirement in the UK and across the EU — all implantable medical devices are classified as single-use once explanted. Reusing an explanted ICD would be illegal and dangerous: it is impossible to guarantee the complete removal of body tissue or fluid from the device, and sterility cannot be assured after removal, creating a serious risk of infection and adverse reaction. The electronics and battery may also have degraded in ways that are not externally visible.

When an ICD battery reaches end of service, the generator is replaced with a new device. The old device is disposed of in accordance with medical waste regulations.

Category: Implantable Devices

People who have ICDs need to rely on a fast response from their devices. This can’t happen if time is needed for recharging.

Category: Implantable Devices

Typically, the leads are reused with the new heart device. If the existing leads cannot be reused, they will stay in the body and new leads will be implanted. In certain situations, the doctor may recommend a lead be removed and replaced with a new lead.  The lead removal procedure is usually performed by a doctor who specializes in lead extractions.

Category: Implantable Devices

Your ICD has replacement time indicators, such as lower battery voltages. These give your doctor plenty of time to schedule a replacement before the battery runs out. Continue regular follow-up visits so your doctor can monitor your condition and device operation.

Category: Implantable Devices

Your doctor will keep a close watch on your ICD battery life through regular follow-up visits and/or with remote monitoring systems.

Some ICDs emit an alert when the time is for a change. See our ICD sounds and alerts page for more information

Category: Implantable Devices

If your air bags go off while you are in a car, whether you have an ICD or not, seek immediate medical attention.

Category: Implantable Devices

The majority of your ICD consists of the battery and capacitor (the component that stores and delivers charges). A smaller portion consists of the device’s electronics.

Category: Implantable Devices

While ICD components are protected in titanium cases, you should still avoid activities that may involve hard physical contact.

Category: Implantable Devices

Pressure ratings can vary among ICD models. Typical diving depths can range from 50 to 100 feet. Always check with your doctor about scuba diving restrictions.

Category: Implantable Devices

Full body imaging scanners (also called millimeter wave scanners and 3D imaging scanners) are used in airports, courthouses, prisons and other public facilities. Your ICD is not likely to be affected because the scanning takes only a short time.

Category: Implantable Devices

Phones, which use wireless signals, have electromagnetic fields around them. Some of these fields may affect the normal operation of your heart device. Your phone should be kept at least 6 inches away from your device.  When using a mobile phone, it is best to hold it to the ear that is farthest away from your heart device. Also, is a good idea to avoid carrying your phone in a shirt pocket that is close to the ICD.

Category: Shock

No, your phone should be kept at least 6 inches away from your device. Cell phones, which use wireless signals, have electromagnetic fields around them. Some of these fields may affect the normal operation of your heart device. When using a mobile phone, it is best to hold it to the ear that is farthest away from your heart device.

Category: Implantable Devices

Aviation transponder receivers are used to track the location of an aircraft. They are designed to receive signals only from aircraft transponders and pose no threat to your ICD.

Category: Implantable Devices

When jump starting an engine, maintain at least 24 inches between the jumper cables and your ICD.

Category: Implantable Devices

Wireless battery chargers that don’t require an AC plug-in are used to charge items such as cell phones, music players and tablets. When using this type of charger, keep at least 6 inches between the charger and your ICD.

Category: Implantable Devices

When using an AC charger of up to 100 amps, such as those used to recharge a car battery, keep your ICD at least 12 inches away from the charger.

Category: Implantable Devices

For some electric vehicles, there may be safety precautions when charging the battery. For example, you may not be able to sit in the vehicle while it is charging. Check with the car’s manufacturer for guidelines.

Category: Implantable Devices

Yes, it is safe to drive an electric car if you have an ICD or other heart device.

Category: Driving

Cosmic rays consist of high-energy radiation that strikes the earth from space. Most of these flares and rays are absorbed in the atmosphere and are unlikely to affect an ICD once they reach the ground.

Category: Implantable Devices

If you receive a therapy shock, anyone touching you may feel the shock as a muscle spasm or a tingle, although it is unlikely. A therapy shock can be startling, but it will not hurt a person touching you.

Category: Implantable Devices

No. You will not receive a warning from your ICD before a shock. However, you may have symptoms that tell you a shock may be imminent.
Symptoms may include dizziness, lightheadedness, or a fluttering in the chest.

Category: Implantable Devices

No, your ICD will only shock you if it detects a heart rhythm that is too fast.

Category: Implantable Devices

No, your ICD is designed to deliver a shock to treat heart rhythms that are too fast.

Category: Implantable Devices

There are no medications that interfere with your ICD. Talk with your doctor about any questions or concerns regarding medication.

Category: Medications

There are no known foods that interfere with your ICD. The device responds to your heart’s electrical activity, not to what you eat.

However, diet does matter for your heart health more broadly. Some cardiac medications — particularly warfarin — can be affected by foods high in vitamin K (such as leafy greens), and grapefruit can interact with several heart medications. If you are on warfarin or have specific dietary questions in relation to your medications, ask your GP or pharmacist for advice.

Category: Implantable Devices

If you work on power lines, you may encounter interference with your ICD’s operation. Consult with your employer and your doctor.

Category: Implantable Devices

Standing under large power lines at ground level should not affect your ICD. However, stay out of any fenced areas such as substations.

Category: Implantable Devices

Yes. You can work on your car as long as there is no medical reason to avoid working around engines. You should, however, keep at least 12 inches between your ICD and parts of the car’s ignition system.

Category: Implantable Devices

You should keep at least 12 inches between your ICD and parts of the car’s ignition system.

Category: Implantable Devices

Check with your doctor about any restrictions. Some doctors do recommend limiting use of the arm that is on the same side as the ICD. The surgical site may be sensitive after the implant procedure and need time to heal for a number of days. However, after a while, you should be able to resume activities that you were doing before getting the device. Tennis anyone?

Category: Implantable Devices

You may walk through security devices and they should not affect your ICD. Simply walk through the area at a normal pace, but don’t stand or linger nearby. Always carry your heart device ID card. This card is helpful if your heart device sets off a metal detector or a security system. If a handheld wand is used, ask security personnel to avoid holding it over or waving it back and forth over your heart device.

Category: Implantable Devices

Yes. However, they are typically replaced with a new ICD.

Category: Implantable Devices

There are no risks from using a heated car seat because there is at least 6 inches between the seat’s electrical components and your ICD. So continue to enjoy this small luxury during the winter months.

Category: Implantable Devices

Using a vibrator poses no risks. Just make sure the vibrator is in good working condition and has no electrical problems.

Category: Electromagnetic interference

A momentary shock will not permanently damage your ICD. A memorable (longer) shock may cause some ICD settings to be reset to nominal values. Your doctor can restore your individual settings in the clinic.

Category: Implantable Devices

Yes. Both mains-powered and battery-powered electric fences pose a low risk to your ICD, because the electrical pulse is delivered very briefly — approximately once per second. If you accidentally touch an electric fence, the momentary shock will be startling but will not permanently damage your device. It may temporarily affect the pacing function of your ICD, but normal operation will resume once you move away.

Keep at least 30cm (12 inches) between your ICD and the fence wire and energiser unit when working near electric fencing.

Category: Implantable Devices

While it is possible for frozen shoulder (adhesive capsulitis) to occur with ICD implants, it is unlikely. Performing gentle arm motion during the healing process will likely prevent this condition from occurring.

Category: Implantable Devices

Temporarily limiting certain arm movements can help with healing and also prevent dislodgement of the leads. You should be able to go back to your normal arm movements after you have healed from the surgery.

Category: Implantable Devices

MRI equipment generates large magnetic fields and radio waves that may interfere with ICD operation. Check with your doctor to see what precautions, if any, you should follow when working around MRI machines.

Category: Implantable Devices

An AICD is short for automatic implantable cardioverter defibrillator. AICD is just another term for ICD.

Category: Implantable Devices

Items that generate or use electricity or transmit wireless signals have electromagnetic fields around them. Some of these fields may affect ICD operation. Remember that most items used in everyday life are not likely to affect your ICD. However, if you are concerned about equipment in your work environment, ask your employer to measure electric field intensity limits that may interfere with your ICD or to hire an outside firm to do so.

Category: Implantable Devices

Yes, you can use a urinary monitor that includes a magnet. Just remember to keep the tether magnetic strap and battery compartment of the monitor at least 6 inches away from your ICD.

Category: Implantable Devices

Yes, electroconvulsive therapy can be performed if you have an ICD. However, because this therapy introduces electrical current into the body, there may be an effect on your ICD. If you are considering electroconvulsive therapy, please consult with your doctor first to see if there are any possible risks from the procedure on your device and condition.

Category: Implantable Devices

A colonoscopy is an exam that uses a tiny video camera to look for abnormalities in the large intestine. A colonoscopy can be safely performed on patients with heart devices. Sometimes during the exam they may use electrocautery to remove polyps. In this case, the doctor performing the procedure would need to take precautions while using the electrocautery.

Category: Implantable Devices

Ischemic cardiomyopathy (CM) is the most common type of dilated cardiomyopathy. In ischemic CM, the heart’s main pumping chamber, the left ventricle, has been damaged by a lack of blood supply to the heart. This is usually caused by a heart attack or coronary artery disease (CAD). The result is an enlarged, dilated, and weakened heart that cannot adequately pump blood through the body.

Category: Implantable Devices

ICDs are entirely compatible with normal sleep. Initially, you may find it uncomfortable to lie on the side of your implant, but most people adjust within a few weeks as the site heals.

If your device is also pacing your heart, you may occasionally be aware of the pacing sensation, particularly when lying still at night. This usually becomes less noticeable over time.

Sleep disturbance is common after cardiac arrest and ICD implantation, and is often related to anxiety, hypervigilance, or adjusting to the reality of having a device rather than the device itself. If sleep problems persist, discuss them with your GP — addressing underlying anxiety or adjusting to your new situation with support can make a significant difference.

Category: Implantable Devices

Because the remote monitoring systems can potentially warn your doctor of changes in your condition, resulting in early intervention within hours or days of the change, it is recommended that the remote or app-enabled monitoring be available as much as possible. If you don’t currently have remote or app-enabled monitoring set up, ask your clinic about using it. They will work with your ICD manufacturer to get you enrolled.

Category: Implantable Devices

Yes, there are different versions of remote monitors available that do not require a landline connection, using different wireless technologies.

Category: Implantable Devices

Riding a motorcycle is considered a low-risk activity and so it is usually permitted. However, this may vary depending on any medical conditions you have and your applicable driving laws, so do consult your doctor first.

Category: Implantable Devices

No inappropriate interactions between ICDs and hybrid vehicles have been reported, so it’s a low risk.

Category: Implantable Devices

Yes, keep wearing your seatbelt. If it hurts or creates pressure near your device, just put some padding between you and the belt.

Category: Driving

The ship’s radar is normally located far enough from any public areas that it won’t affect your ICD.

Category: Implantable Devices

Yes. Taking a cruise is safe with an ICD. The ship’s radar equipment is located well away from passenger areas and is very unlikely to interfere with your device.

Before travelling, make sure you carry your device ID card at all times, as it contains important information about your device and may be needed at port security. It is also worth contacting your travel insurer to confirm your cover — see our FAQ on travel insurance for more information. Let your device clinic know you are travelling so they can advise on remote monitoring arrangements if needed.

Category: Implantable Devices

Skiing will not interfere with your ICD. Whether you are able to ski depends on your overall medical condition and your cardiologist’s guidance, not the device itself.

Most people return to skiing and other physical activities after a full recovery from ICD implantation. Discuss any concerns with your cardiologist before you travel, particularly if you have an exercise-triggered condition, or if high altitude is relevant to your heart condition.

Category: Implantable Devices

After you’re healed from the implantation, no, it should not hurt to get a hug. If you ever do feel lingering pain or discomfort around your device, call your doctor.

Category: Implantable Devices

Yes. Riding on a train or tram poses a very low risk of interference with an ICD. However, we recommend talking to your cardiologist before your journey up the mountain, as there are lower oxygen levels at high altitudes.

Category: Implantable Devices

Yes. In the UK you are legally required to inform the DVLA if you have a condition or device that may affect your ability to drive safely. Having an ICD is a notifiable condition.

For Group 1 licences (car and motorcycle), there is typically a period of driving restriction following ICD implantation — usually six months — and further restrictions may apply if your device delivers a shock. For Group 2 licences (lorries and buses), the restrictions are stricter and in many cases permanent.

You should notify the DVLA using the appropriate medical questionnaire, available on GOV.UK. Your cardiologist or device clinic can support you with this process and provide any necessary medical information. You should also inform your motor insurer, as failing to disclose a relevant medical condition can invalidate your policy.

Always check the current DVLA guidance, as the rules are updated periodically. The full guidance is available at www.gov.uk/dvla/medicalenquiries.

Category: Implantable Devices

No. Not only is your ICD built to withstand stress, but your body temperature stays fairly constant as well.

Category: Implantable Devices

You may notice a slight bulge under the skin where an ICD is implanted. This is normal. How it looks depends on the size of the device, size of the patient, where it’s implanted and other things.

Category: Implantable Devices

Exposure to pressures greater than 4 ATA is not recommended. That means diving no deeper than about 100 feet or 30 meters in seawater. Talk to your doctor about that and about any other concerns with scuba diving and your heart condition.

Category: Sports

Boxing shouldn’t interfere with your ICD, although a blow to the device area could possibly dislodge one of the leads. (Just don’t fight anyone good.)

Category: Implantable Devices

No, joy buzzers or other tools of mirth won’t hurt your ICD. But your prankster probably doesn’t know that…hint, hint.

Category: Implantable Devices

Induction cooktops are very haute in the world of cuisine, but they do pose a concern to ICDs. Instead of heating up themselves, they use magnetic energy to heat the pan, made of steel, aluminum or copper. Therein lies the rub. Because of the magnetic fields, make sure your device is at least 2 feet away from the cooktop.

Category: Implantable Devices

Pet shock collars for electric pet fences, including remote controls and bases with antennas, should be kept six inches away from your heart device.  Buried wires should be at least 12 inches from your ICD.

Category: Practical Issues

Heart devices such as ICDs are very tough and in normal day to day activities shouldn’t require any extra protection. However, if you would prefer to have an additional layer of protection there are a number of options available and these can be found on our ICD Protection page.

Category: Implantable Devices

Electromagnetic interference has only a temporary effect on ICDs. Once the device no longer detects the EMI, it will resume normal function. Don’t hold magnets within 6 inches of your device because that can temporarily disable the defibrillator.

Category: Implantable Devices

Yes. Plumbing work is generally safe for people with ICDs. The tools and materials used in most plumbing tasks do not generate electromagnetic fields that would affect your device.

If your work involves power tools with electric motors, apply the standard precaution of keeping the motor at least 15cm (6 inches) from your device. If you work near large pump motors or industrial electrical systems, the same principles as for other industrial environments apply — discuss your specific work environment with your cardiologist or device clinic if you have concerns.

Category: Implantable Devices

Yes. Lasers are light energy and shouldn’t mess with your ICD. However, some magnets or transmitters in laser tag vests may interfere with your ICD, so keep it 6 inches away from your device.

Category: Implantable Devices

In the UK, holding an ICD will prevent you from holding a Group 2 licence, which covers lorries (LGV/HGV) and buses (PCV). If you currently hold a Group 2 licence, having an ICD implanted will typically result in its revocation by the DVLA.

This can be a significant and distressing consequence for professional drivers, and it is worth discussing the implications with your cardiologist before implantation where possible. In some circumstances, alternatives to ICD therapy may be considered, though this is always weighed carefully against the risk of sudden cardiac arrest.

If you drive professionally and have been told you need an ICD, speak to your cardiologist and contact the DVLA for specific guidance on your situation. Occupational health support from your employer may also be available.

Category: Implantable Devices

In the UK, having an ICD or the underlying heart condition that led to its implantation will almost always prevent you from holding a Civil Aviation Authority (CAA) medical certificate, which is required to fly as a pilot of any category.

This applies to Private Pilot Licences (PPL), Commercial Pilot Licences (CPL), and Airline Transport Pilot Licences (ATPL). The CAA assesses each case individually, but conditions such as ventricular arrhythmia and ICD implantation are considered disqualifying in the vast majority of circumstances due to the safety implications of sudden incapacitation at altitude.

If you are a trained pilot and are facing ICD implantation, it is worth seeking specialist aviation medical advice early — ideally from an Aeromedical Examiner (AME) — before any decisions are made, so that all options are fully understood. In very limited circumstances, some pilots may be able to fly in certain categories with specific conditions, but this is rare and assessed on a case-by-case basis.

More information is available from the UK Civil Aviation Authority at www.caa.co.uk.

Category: Implantable Devices

Wi-Fi shouldn’t be a problem as long as you keep your ICD at least 6 inches away from the wireless router and the receiver on your computer.

Category: Implantable Devices

Most machine shop environments are safe for people with ICDs, but some industrial settings — particularly those involving high-powered electrical equipment, arc welding, large motors, or induction heating — may generate electromagnetic fields that could temporarily affect your device.

If you work in a machine shop or industrial environment, it is worth asking your employer to identify any equipment that may generate significant electromagnetic fields and keeping at least 15cm (6 inches) from motors and electrical components where possible. Your cardiologist or device clinic can advise on your specific situation, and your employer’s occupational health service may also be a useful resource.

If you experience symptoms such as dizziness, palpitations, or a shock while near industrial equipment, move away from it promptly and contact your device clinic.

Category: Implantable Devices

If you get an ICD, you may notice a number of changes after implantation. Some people have more energy because the device is pacing their heart and delivering therapies to help with fast rhythms.

Category: Implantable Devices

Yes. A petrol-powered lawn mower requires you to keep at least 30cm (12 inches) between the running ignition system and your ICD. For electric lawn mowers, maintain at least 15cm (6 inches) between the motor and your device. These are the same precautions as for other petrol and electric powered tools.

Category: Implantable Devices

Yes. Remember to discuss exercise with your doctor, and follow their guidelines based on your own health needs. It’s always best to ease back into a fitness routine. Walk before you jog, jog before you run, etc…

Category: Implantable Devices

Yes. Exercise is actively encouraged for most people with ICDs. Physical activity supports heart health, mental wellbeing, and recovery. An ICD is not implanted to limit you — it is there to protect you if a dangerous arrhythmia occurs.

The type and intensity of exercise that is appropriate depends on your underlying condition and your cardiologist’s guidance. Most people can resume moderate exercise such as walking, swimming, and cycling after a full recovery from the implant procedure. Some may be advised to avoid very high-intensity exercise or competitive sport, particularly if they have an exercise-triggered arrhythmia condition.

Cardiac rehabilitation is an excellent starting point for rebuilding fitness safely after cardiac arrest or ICD implantation. Ask your GP or cardiac team for a referral.

Category: Implantable Devices

E-readers have wireless transmitters to work on data networks, so we recommend keeping them 6 inches away from your ICD. So, no, you shouldn’t fall sleep with them snuggled up close. That’s getting a little too attached to your technology anyway.

Category: Electromagnetic interference

First of all, congratulations on your bravery.

Category: Implantable Devices

Airbags are great-most of the time. Unfortunately, the speed and force of airbag delivery might pose a danger to ICD patients. It likely will not damage the device itself, but there may be a danger of lead dislodgement. It just depends on your size, the type of car, and the type of airbag. Nonetheless, the immediate threat is the car accident, so it is a good tradeoff.

Category: Implantable Devices

Yes, coffee is generally safe in moderate amounts. Caffeine is a natural stimulant and can cause an increase in your heart rate, but moderate amounts should not be enough to cause any problems with your device.

Category: Implantable Devices

Items that contain magnets, such as bingo wands, mechanic’s extractor wands, magnetic bracelets, clasps, or chair pads, magnetic therapy products, stereo speakers or earphones, and handheld massagers can temporarily affect the operation of your implanted heart device. We recommend you keep items containing magnets at least 6 inches (15 centimeters) away from your device.

Category: Implantable Devices

Yes. Electric toothbrushes have no known effect on ICDs. As with most electronic devices, keep the toothbrush and its charging base at least 15cm (6 inches) away from your device as a precaution.

Category: Implantable Devices

Yes. Swimming is safe with an ICD once you have fully healed from the implant procedure. Most people are advised to avoid swimming for around four to six weeks after implantation to allow the wound site to heal properly and to reduce the risk of lead dislodgement while the leads are bedding in.

After recovery, there are no specific restrictions on swimming for most ICD patients. If you swim in open water, it is sensible to go with a companion, as it is with any open water swimming.

If your cardiac arrest was caused by an inherited condition such as CPVT or Long QT Syndrome, where exercise or cold water can trigger arrhythmias, discuss specific restrictions with your cardiologist.

Category: Implantable Devices

Yes. Peer support — connecting with others who have direct experience of living with an ICD or surviving a cardiac arrest — is one of the most valued forms of support for many people. Hearing how others have adjusted, managed their fears, and got on with their lives can be reassuring and practical in a way that clinical information alone cannot always provide.

Sudden Cardiac Arrest UK (SCAUK) offers peer support resources for both ICD patients and cardiac arrest survivors, including co-survivors. Visit suddencardiacarrestuk.org or get in touch directly to find out what is available.

Your cardiac team or GP may also be able to point you towards local support groups or cardiac rehabilitation programmes, which often have a peer support element. The British Heart Foundation’s network of Heart Support Groups provides in-person peer support in many areas of the UK.

Category: Psychological Support

Yes. Being in the sun and normal outdoor activities have no effect on your ICD. Standard sun safety advice applies to everyone regardless of whether they have a heart device.

Category: Implantable Devices

It’s important for any healthcare provider you see to know about your implanted devices, as well as the medical conditions that relate to them. It’s simply in your best interest. Lots of people find their ID card to be a good icebreaker when starting a conversation with a new doctor, clinician, or dentist.

Category: Implantable Devices

Wireless modems and routers are safe to use as long as you keep them at least 6 inches away from your ICD.

Category: Implantable Devices

Yes, you can use mobile phones. However, mobile phones may cause electrical interference with your heart device when the phone is turned on and held too close to your heart device. Also, some accessories for mobile phones contain magnets that may cause interference, such as earbuds or cases with magnetic clasps. Any effect is temporary, and simply moving the phone or accessory away will return the heart device to its previous state of operation.

Category: Implantable Devices

Definitely. Just keep them 6 inches away from your ICD.

Category: Implantable Devices

Welding with currents above 160 amps may temporarily affect normal ICD function. Check with your doctor. They might not know much about welding, but they can talk to you about interference with your ICD. Note: Aprons or vests will not effectively shield the ICD from the electromagnetic energy generated by welding equipment. Follow these safety precautions to avoid interference:

Category: Implantable Devices

Get your yard maintenance on. It’s fine to use a powered lawnmower as long as you keep some distance between the running mower and your ICD. For electric motors, stay 6 inches away. If you’re using a gas-powered mower, keep the ignition (spark plug area) at least a foot away from your heart device.

Category: Implantable Devices

Always carry your heart device ID card. This card is helpful if your heart device sets off a metal detector or a security system.

Category: Implantable Devices

Yes. Using a microwave won’t affect your ICD.

Category: Implantable Devices

In the UK, driving after receiving an ICD is governed by DVLA regulations, not solely by your doctor’s assessment.

For Group 1 licences (car and motorcycle), a driving ban of at least six months typically applies following ICD implantation. If your ICD delivers a shock that causes or could have caused incapacity, a further period of restriction applies. Once the restriction period has passed and your cardiologist confirms your condition is stable, you can usually resume driving.

For Group 2 licences (lorries and buses), the restrictions are much stricter. Having an ICD typically results in permanent revocation of a Group 2 licence in most circumstances. This can have significant implications for professional drivers.

You are legally required to notify the DVLA and your motor insurer. Your cardiologist or device clinic will advise you on when it is medically appropriate to resume driving, but the final determination is made by the DVLA. Always check the most current guidance at www.gov.uk/dvla/medicalenquiries.

Category: Implantable Devices

There might be. It depends on what your work environment is like. After receiving an ICD, you may need to be more careful while using electrical tools, appliances, or other big fancy machinery, in order to avoid device “cross-talk” called electromagnetic interference.

Category: Implantable Devices

Yes. Hand-held hair dryers can be used safely, but keep the dryer at least 15cm (6 inches) away from your device while it is running. Salon-style hood dryers — the type you sit under — are safe and do not require any special precautions.

Category: Implantable Devices

ICDs are to help you live better, not limit you. There might be a few lifestyle adjustments you need to make, but you should be able to resume most activities once your doctor has confirmed that your incision has healed.

Category: Implantable Devices

When a safety advisory or recall is issued on an ICD or pacemaker, device manufacturers are required to notify all clinicians implanting their devices. In the UK, the Medicines and Healthcare products Regulatory Agency (MHRA) coordinates device safety communications, and manufacturers are expected to notify affected patients directly or through their clinical teams.

Your device clinic will typically contact you if your device or leads are subject to an advisory. Not all advisories require the device to be replaced — many result in a change to device programming, more frequent monitoring, or simply an awareness check. Your clinical team will advise you on whether any action is required.

You can also check the MHRA’s device alerts database at www.gov.uk/government/collections/medical-device-alerts to see whether any alerts have been issued relevant to your device. If you are unsure whether your device is subject to an advisory, contact your device clinic directly.

Category: Implantable Devices

Cataract surgery is generally safe for people with ICDs and pacemakers. The procedure does not typically involve electrical equipment that would interfere with a heart device.

However, if electrocautery (an electrical current used to stop bleeding) is needed during the procedure, the surgeon and anaesthetist should be informed about your device beforehand so that appropriate precautions can be taken. Always carry your device ID card to any medical or surgical appointment and ensure the clinical team are aware of your ICD.

Category: Implantable Devices

Yes. Keep your teeth happy. Dental X-rays shouldn’t give you any problems.

Category: Implantable Devices

If an external defibrillator or AED must be used, it should be used. However, it may change the settings or damage your ICD. If external defibrillation or AED is used, the implanted device should be checked for proper settings afterward.  Consult your doctor if you ever get defibrillated externally.

Category: Implantable Devices

Don’t be all pins and needles about this one. Acupuncture is no problem, as long as it’s not acupuncture with an electrical stimulus. Electrical stimulus could be detected by your ICD, potentially resulting in an inappropriate shock.

Category: Implantable Devices

Yes, ultrasounds are safe for ICD users.

Category: Implantable Devices

RF ablation is possible, as long as correct safety protocols are followed.

Category: Implantable Devices

Usually, but it depends on the manufacturer of your ICD.

Category: Implantable Devices

Your doctor will prescribe a schedule of post-implant checkups, and they’ll just become a regular thing. At each one, the clinician will use a gizmo called a programmer that communicates with the computer chip in your ICD to check it out. It’s very simple, and it helps ensure that your device is meeting your needs, no slacking off. Often these checkups can be done at home with remote monitoring.

Category: Implantable Devices

Your doctor will know if you recieve a shock as the ICD records and stores data when therapy like a shock is delivered.

Category: Implantable Devices

No. ICDs vary in size, shape, and design depending on the manufacturer and model, and on how many leads are needed. Modern ICDs are generally smaller than older models. Your cardiologist will select the most appropriate device for your specific clinical needs. If you have a preference or a concern about device size — for example in relation to how visible it may be under your skin — raise this with your cardiologist before the procedure.

Category: Implantable Devices

ICDs deliver shocks to save your life when pacing therapies don’t return your heart to a normal rhythm. After a successful shock, your normal heart rhythm will resume.

Category: Implantable Devices

ICDs vary in size, depending on type and model. But if you’d like to bust out your ruler, the average ICD size is 2.5 inches high x 2 inches wide x 0.5 inch deep (or 64mm x 51mm x 13mm).

Category: Implantable Devices

Yes. Lead dislodgement doesn’t happen often, but it does happen.

Category: Implantable Devices

Let your doctor know if you’re worried. Allergy testing can be done – and if you need a custom device, they can order one with special coatings to prevent allergic reactions. An allergic reaction to the ICD is very rare.

Category: Implantable Devices

Your doctor plays matchmaker to set you up with the device that you’ll get along with the best. They’ll consider the device features as well as your medical condition. If you have a preference, discuss this with your doctor before the day of your surgery.

Category: Implantable Devices

The outer layer of an ICD is usually made of titanium. Titanium is considered the most attractive material for biomedical applications and is used in many different kinds of implantable medical devices such as artificial hip and knee replacements, artificial hearts, dental implants, and many others.

Category: Implantable Devices

If someone needs an ICD, age is not a limiting factor.  ICDs have been implanted in children as young as several months old.

Category: Implantable Devices

Currently, there aren’t any companies that make an ICD specifically for children. A regular ICD will perform correctly when programmed for a child, and might be implanted differently for the child’s comfort.

Category: Implantable Devices

Yes. An ICD can be turned off, but only by a doctor’s orders. This is typically done only when a person is preparing for death, usually due to another cause.

Category: Implantable Devices

The longevity of your ICD depends on how often it is used, and how it’s programmed. The typical range is 4-12 years. Say “What’s up?” to your doc for more specifics.

Category: Implantable Devices

ICDs are commonly tested for device performance and battery life. This way, you’ll know that your device is programmed correctly and when it’s ready for replacement.

Category: Implantable Devices

Battery type varies by manufacturer. For example, Medtronic ICDs use lithium silver vanadium oxide batteries.

Category: Implantable Devices

Globally, hundreds of thousands of people receive ICD implants each year. In the UK, approximately 35,000–40,000 ICDs and pacemakers are implanted annually, with ICDs accounting for a significant proportion of these. ICD implantation rates have grown steadily over recent decades as evidence for their benefit has expanded and awareness of conditions such as hypertrophic cardiomyopathy and inherited arrhythmia syndromes has increased.

Living with an ICD is something millions of people around the world do successfully — the majority returning to work, exercise, travel, and a full life after implantation. You are far from alone.

Category: Implantable Devices

As of right… … … NOW, one patient has had 12 ICDs.

Category: Implantable Devices

It is very common to feel anxious before getting a heart device. Concern about the procedure itself, about what having an ICD means for your life, and about the underlying condition that led to the recommendation are all understandable responses.

The most effective way to manage anxiety around the procedure is to get clear, reliable information — which is what this site is here to provide. Knowing what to expect before, during, and after implantation, and understanding how your ICD works and what it will and will not prevent you from doing, can significantly reduce fear of the unknown.

If your anxiety is significant or persistent, do speak to your GP or cardiac team. Psychological support is available, and you do not need to manage this alone. Peer support — talking to others who have been through the same procedure — is also highly valued by many people. Contact SCAUK to find out more.

Category: Implantable Devices

Before your ICD implant, ask that doctor of yours what medications you’re allowed to take. It might be necessary to stop some of them before the procedure. For example, it’s common for people with diabetes to adjust their medications.

Category: Implantable Devices

An ICD can be programmed to deliver several types of therapies.  They can act as a standard pacemaker, deliver high-energy shocks, and deliver rapid pacemaker-like therapy to break up fast heart rhythms.

Category: Implantable Devices

An ICD is made up of a small titanium can and at least one soft insulated wire lead. The titanium can holds the electronics, a built-in lithium battery and the high-voltage capacitors needed for a shock. The leads carry electrical impulses from the defibrillator to the heart, as well as information back from your heart so the defibrillator knows what it is doing..

Category: Implantable Devices

Infection isn’t all that common. Studies show a 1%-2% infection rate following implant.

Category: Implantable Devices

No. Shaving is typically done by the highly trained surgical personnel before the procedure. Enjoy!

Category: Implantable Devices

Not really. Sedation/anesthesia is used for the procedure. You might be slightly awake, but you shouldn’t feel anything. You probably won’t remember anything either.

Category: Implantable Devices

The incision for an ICD implant is typically around 5–7cm long and is usually made just below the collarbone. It does leave a scar, and the ICD itself creates a small visible or palpable bulge under the skin.

Everyone heals differently. In most people the scar fades and becomes less noticeable over time, though it rarely disappears completely. How prominent the bulge is depends on the size of the device and your individual build.

Some people find the visible reminder of the device emotionally difficult at first. This is entirely understandable and, for most people, becomes easier to live with over time. If you have significant concerns about the appearance of the scar or device, your GP or cardiac nurse can discuss options and refer you for support if needed.

Category: Implantable Devices

It usually takes about 2-3 days before you can resume everyday activities. Your doctor will tell you more, as some activities may be limited for several more weeks to allow time for a full recovery. Patience is a virtue.

Category: Implantable Devices

Following ICD implantation, you will typically be advised not to lift heavy objects or raise the arm on the side of your implant above shoulder height for four to six weeks. This is for two reasons.

First, the incision site needs time to heal without being put under physical strain. Second, and more importantly, the leads need time to become securely anchored in the heart wall — a process called lead maturation. Vigorous arm movement and heavy lifting in the early weeks can dislodge a lead before it has properly bedded in, which would require the procedure to be repeated.

Your clinical team will advise you on the specific restrictions for your situation. Most people can gradually return to normal arm movements and light activity within a few weeks, with heavier lifting and overhead activity following at six to eight weeks.

Category: Implantable Devices

Most people are discharged home the day after ICD implantation, once the clinical team is satisfied with the device function and the implant site. In straightforward cases, some centres discharge patients on the same day.

If new leads were implanted, or if there were any complications during the procedure, a slightly longer stay may be required. Your clinical team will advise you on what to expect based on your specific situation.

Category: Implantable Devices

You will be monitored in the procedure area/recovery room until you are fully awake. Monitoring typically includes heart rate and rhythm, blood pressure and oxygen level until you are fully awake and then, depending the facility, you may be transferred to a short-stay unit or cardiac area for several hours to overnight before being discharged.

Category: Implantable Devices

Risks can include, but are not limited to, infection, bleeding, punctures to the lung, heart, or vein during lead insertion, swelling and bruising at the implant site. Talk with your doctors about your risk factors.

Category: Implantable Devices

First, an incision is made just below the collarbone. Then leads are inserted and attached to the heart, and then tested to make sure they’re working right. The leads are then connected to the ICD and everything is placed under the skin. Finally, the incision is closed up and you’re all done.

Category: Implantable Devices

You know it better as a pacemaker. An implantable pulse generator provides timed electrical stimuli to the heart. It’s one part of a three-part system: the pacemaker with the electronics and power source, your heart, and the leads that connect the two.

Category: Implantable Devices

Yes. Gas powered snow blowers can be used. It is recommended that you keep at least 12 inches between the running motor and the ICD.

Category: Implantable Devices

Yes, you can. But keep it at least a foot away from your chest, which you’d probably do anyway.

Category: Implantable Devices

Intimacy is a normal part of life. We understand patients resume sexual activity when they feel comfortable. However, if you have a question, it may be helpful to have a conversation with your doctor.
If in doubt about an activity, always discuss it with your doctor or nurse.

Category: Implantable Devices

A combination of several factors may put people at risk for a life-threatening arrhythmia. This includes prior heart attacks, reduced heart function, advanced heart failure and spontaneous VT or VF that is not due to a transient or reversible cause.

Category: Implantable Devices

An ICD monitors a person’s every heartbeat around the clock. If the heart rate is too fast or too slow, the ICD automatically sends small, painless electrical signals to correct it. If that doesn’t do the trick, the defibrillator delivers a shock to restore the heart to a normal rate.

Category: Implantable Devices

Yes, you can stay toasty under your electric blanket without harming your ICD.

Category: Implantable Devices

A magnetic resonance imaging (MRI) scan is a type of diagnostic that creates an internal view of your body. The energy fields present during an MRI scan may harm a traditional heart device, which could endanger a patient’s health.

Category: Implantable Devices

Most likely, yes. ICDs have been proven to terminate 98% of potentially life-threatening arrhythmias.

Category: Treatment

Electrophysiologists (EPs) specialize in treating electrical disorders in the heart. ICDs and CRT-Ds monitor and treat certain electrical problems in the heart. Many EPs perform implant procedures and conduct follow-up device checks for patients with heart devices.

Category: Cardiac Arrest

The simple answer is yes, but usually only temporarily.

The length of the period that you cannot drive for is mainly dependent on the cause of your cardiac arrest and the remedial action taken.

For example, if you had a heart attack as the cause and you had stents and medications to prevent future episodes then the period to stop driving would typically be 1 month.

If you had to have an ICD fitted then the period that you had to stop driving would typically be 6 months from the date of the implant – not the date of the cardiac arrest

Category: Implantable Devices

If at any time you receive an appropriate shock from your ICD i.e. one that is correcting a potentially fatal arrhythmia, you must surrender your licence and stop driving for 6 months.  

If you were incapacitated i.e. went unconscious whilst you received the shock the suspension is 2 years. This may be reduced to 6 months if your cardiologist takes steps to prevent any further events requiring a shock eg starting or adjusting medications.

If you receive an inappropriate shock i.e. the shock was unnecessary, then you will receive a 1 month suspension.

If you are driving whilst you receive a shock you should stop as soon as is safe to do so, and should not continue until the cause of the shock has been investigated.

For more information about shocks see our ICD shocks page.

Category: Driving

The date of your suspension will usually start from the date that you have any remedial work or get a formal diagnosis of a condition, not necessarily the date of your cardiac arrest.

For example, if you have a cardiac arrest and 2 weeks later get an ICD implant, then the suspension will start from the date of the implant, not the arrest.

If you have a heart attack as the cause of your cardiac arrest, the problem is often looked at and dealt within a short time frame (same day) so the suspension will start from that day.

Category: Implantable Devices

It will largely depend on your individual circumstances and medical conditions but common suspension periods are as follows:

If you had a heart attack as the cause of your cardiac arrest and it was remedied with medications and/or stents then the suspension period is 1 month.

If you had to have an ICD fitted then the suspension period will be 6 months from the date of the implant. If you have any shocks further suspensions will apply and the length will vary depending on a number of factors. See “Can I drive if I get a shock from my ICD” for more information.

You may also have to temporarily stop driving if your anti-arrhythmic medications are changed, typically for 1 month.

If your driving licence was revoked you’ll have to wait until all medical enquiries are complete. You will also need to have your driving licence back before you can start driving again.

You can check the DVLA information for medical professionals regarding assessing fitness to drive here, and this shows the rules regarding whether you can drive or not and if not, for how long.

Category: Implantable Devices

You must use the DEFIB1 form which can be downloaded from the government website on this page.

If you are a coach, bus or lorry driver you must use the VOCH1 form.

Category: Driving

This is one for your doctor.

You should be assessed by your doctor using these guidelines which determine the rules for assessing drivers with cardiac conditions.

Many of the conditions listed will mean that there will be some period of suspension, but you may be allowed to drive again if you can meet certain conditions including assessment by a specialist cardiologist.

However, if you have an ICD implanted you will not be able to drive an HGV or commercial vehicle.

Category: Implantable Devices