News tagged with coronary artery
Related topics: coronary artery disease , heart attack , patients , heart disease , heart
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.
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Routinely measuring fractional flow reserve (FFR) using pressure wire assessment during coronary angiography for diagnosis of chest pain leads to significant changes in the management of one in four patients, according to ...
Cardiology 9 hours ago | not rated yet | 0
Cardiac study used as source for new guidelines on treating people undergoing coronary artery bypass surgery
Cardiac research from the University of Alberta had serious impact as a source for the American College of Cardiology and the American Heart Association's new guidelines on how to treat patients undergoing coronary artery ...
Cardiology 10 hours ago | not rated yet | 0
(HealthDay)—In patients who have previously been considered difficult to image, dual-source cardiac (DSC) computed tomography (CT) can identify clinically significant coronary artery disease, according ...
Cardiology May 23, 2013 | not rated yet | 0
The Orsiro stent, which is a novel stent platform eluting sirolimus from a biodegradable polymer, demonstrated non-inferiority to the Xience Prime everolimus-eluting stent for the primary angiographic endpoint of in-stent ...
Cardiology May 21, 2013 | 5 / 5 (1) | 0