News tagged with coronary artery

Related topics: coronary artery disease , heart attack , patients , heart disease , heart

Visceral fat key marker for cardiometabolic risk

(HealthDay)—Visceral fat is associated with cardiometabolic risk, including metabolic syndrome, regardless of body mass index (BMI), according to a study published online Nov. 5 in JACC: Cardiovascular Im ...

Nov 10, 2014
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Women play dangerous waiting game with heart symptoms

When heart symptoms strike, men and women go through similar stages of pain but women are more likely to delay seeking care and can put their health at risk, according to a study presented at the Canadian Cardiovascular Congress.

Oct 28, 2014
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Coronary circulation

Coronary circulation is the circulation of blood in the blood vessels of the heart muscle. Although blood fills the chambers of the heart, the muscle tissue of the heart (the myocardium) is so thick that it requires coronary blood vessels to deliver blood deep into it. The vessels that deliver oxygen-rich blood to the myocardium are known as coronary arteries. The vessels that remove the deoxygenated blood from the heart muscle are known as coronary veins.

The coronary arteries that run on the surface of the heart are called epicardial coronary arteries. These arteries, when healthy, are capable of autoregulation to maintain coronary blood flow at levels appropriate to the needs of the heart muscle. These relatively narrow vessels are commonly affected by atherosclerosis and can become blocked, causing angina or a heart attack. (See also: circulatory system.) The coronary arteries that run deep within the myocardium are referred to as subendocardial.

The coronary arteries are classified as "end circulation", since they represent the only source of blood supply to the myocardium: there is very little redundant blood supply, which is why blockage of these vessels can be so critical.

This text uses material from Wikipedia licensed under CC BY-SA