Contraction
When the muscle in the heart wall works (squeezes) to push the blood through the heart and out into the arteries.
Cardiac
Coronary Angiography
Opacification of coronary arteries by injection of iohexol or urograffin or any such contrast agent
Coronary Angioplasty
A procedure in which a narrowed segment of coronary artery is stretched (dilated) by the inflation of a balloon introduced into it by means of cardiac catheterization under x-ray screening. In most cases a stent is then implacted into the angioplasted segment as this improves duration