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Arterial occlusion is a condition involving partial or complete blockage of blood flow through an artery. Arteries are blood vessels that carry oxygenated blood to body tissues. [ 1 ] [ 2 ] An occlusion of arteries disrupts oxygen and blood supply to tissues, leading to ischemia . [ 1 ]
The left artery is most often used because it is closer to the heart, but the right artery is sometimes used, depending on patient and surgeon preferences. The ITAs are advantageous because of their endothelial cells, which produce endothelium-derived relaxing factor and prostacyclin , protecting the artery from atherosclerosis and thus ...
In the blood supply of the heart, the right coronary artery (RCA) is an artery originating above the right cusp of the aortic valve, at the right aortic sinus in the heart. [ 1 ] [ 2 ] It travels down the right coronary sulcus , towards the crux of the heart .
A coronary occlusion, or coronary artery disease, is the partial or complete obstruction of blood flow in a coronary artery. This condition was first discussed in 1910 by Sir William Osler . [ 1 ] This condition slows or blocks the supply of oxygen-rich blood to the heart . [ 2 ]
Plaques in the walls of the coronary arteries can rupture, resulting in occlusion of the artery and deprivation of blood flow and oxygen to the heart muscle, resulting in cardiac cell death. [9] This is known as myocardial infarction. [9] A heart attack can cause arrhythmias, as well as permanent damage to the heart muscle. [25]
The internal diameter of these vessels expands exponentially in the first hours and days following an occlusion, as mitotic division of the cell wall narrows the wall's diameter and expands each vessel's lumen.Within four weeks, the functional capacity of the vessels has reached a maximum, accompanied by a 90% reduction in their resistance ...
The right marginal arteries perfuse the right ventricle and the posterior descending artery perfuses the left ventricular posterior and inferior walls. There is also the conus artery , which is only present in about 45 percent of the human population, and which provides collateral blood flow to the heart when the left anterior descending artery ...
Angiography (left) and CT (middle and right) of chronic total occlusion lesions at the left anterior descending coronary artery (LAD) and right coronary artery (RCA). CT angiography can act as a less invasive alternative to Catheter angiography. Instead of a catheter being inserted into a vein or artery, CT angiography involves only the ...