What is near total occlusion?

Dr Francis Deng ◉ et al. Carotid near-occlusion is a special form of severe carotid artery stenosis that results in a partial or complete collapse of the distal internal carotid artery lumen due to underfilling.

What does complete occlusion mean?

An occlusion is a complete or partial blockage of a blood vessel. While occlusions can happen in both veins and arteries, the more serious ones occur in the arteries. An occlusion can reduce or even stop the flow of oxygen-rich blood to downstream vital tissues like the heart, brain, or extremities.

What is occlusion of the right coronary artery?

Occlusion of the right coronary artery (RCA) may cause infarction of the inferior wall of the left ventricle with or without right ventricular (RV) myocardial infarction (MI), manifested as ST-segment elevations in leads II, III, and aVF.

What happens when a coronary artery becomes occluded?

When one or more of the coronary arteries suddenly becomes completely blocked, a heart attack (injury to the heart muscle) may occur. If the blockage occurs more slowly, the heart muscle may develop small collateral blood vessels (or detours) for other coronary arteries to reroute the blood flow, and angina occurs.

What is carotid bulb?

The carotid sinus, or carotid bulb, is a widening of a carotid artery at its main branch point. The carotid sinus contains sensors that help regulate blood pressure. The carotid artery pulse can normally be felt in the neck by pressing the fingertips against the side of the windpipe, or trachea.

What is internal carotid artery?

The internal carotid arteries are branches of the common carotid arteries that bifurcate into the internal and external carotids at the level of the carotid sinus. [2] After this bifurcation, the internal carotids traverse through the base of the skull to reach the vital organs that they supply.

Can a total occlusion be stented?

What is a Coronary Chronic Total Occlusion? Coronary arteries with severe blockages, up to 99%, can often be treated with traditional stenting procedure.

Can you stent a 100 blockage?

“Patients typically develop symptoms when an artery becomes narrowed by a blockage of 70 percent or more,” says Menees. “Most times, these can be treated relatively easily with stents. However, with a CTO, the artery is 100 percent blocked and so placing a stent can be quite challenging.”

Is 70 blockage in artery bad?

When a coronary artery is at least 60 – 70 % blocked and stable, most commonly angina is brought on by physical activity or stress or emotional stress which leads to myocardial ischemia.

Is 50 blockage of carotid artery bad?

Carotid artery disease (asymptomatic or symptomatic) in which the narrowing of the carotid artery is less than 50 percent is most often treated medically. Asymptomatic disease with less than 70 percent narrowing may also be treated medically, depending on the individual situation.