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The LAD typically supplies 45–55% of the left ventricle and is therefore considered the most critical vessel in terms of myocardial blood supply. [citation needed] Left: Critical stenosis (95%) of the proximal LAD in a patient with Wellens' Warning. Right: The same patient after reperfusion.
Severe stenosis constitutes a diameter loss of 2/3 or more—a greater-than-90% loss of cross-sectional area. [5] To more accurately determine the severity of stenosis, interventional cardiologists may also employ intravascular ultrasound , which can determine the severity and provide information on the composition of the atheromatous plaque.
Stenosis (from Ancient Greek στενός (stenós) 'narrow') is the abnormal narrowing of a blood vessel or other tubular organ or structure such as foramina and canals. It is also sometimes called a stricture (as in urethral stricture ).
If the coronary anatomy is left-dominant, the circumflex artery supplies 40–50% of the left ventricle. Additional images. Coronary arteries (labeled in red text ...
The term "binary" means that patients are placed in 2 groups, those who have ≥50% stenosis and those who have <50% stenosis. Binary restenosis is an epidemiological method of analyzing percent diameter stenosis for observing not only an individual patient, but also performing statistical techniques on a group of patients to determine averages ...
In 91 patients examined by angiography, 90% of which had exertional angina, Kolibash discovered 110 occluded LAD and RCA vessels, 101 of which showed evidence of collateral vessels in their proximal areas. Kolibash divided these 101 proximal areas into two groups: those with normal perfusion at rest (43) and those with abnormal perfusion at ...
Aspirin therapy to prevent heart disease is thus recommended only in adults who are at increased risk for cardiovascular events, which may include postmenopausal females, males above 40, and younger people with risk factors for coronary heart disease, including high blood pressure, a family history of heart disease, or diabetes. The benefits ...
Anatomy photo:20:09-0106 at the SUNY Downstate Medical Center - "Heart: The Left Coronary Artery and its Branches"; Anatomy figure: 20:04-02 at Human Anatomy Online, SUNY Downstate Medical Center - "Posterior view of the heart."