News tagged with coronary artery
Death rates associated with patients with refractory angina, or chronic chest pain, are lower than previously considered; therefore, physicians should focus on relieving the chest pain symptoms and improving the quality of ...
Cardiology May 15, 2013 | not rated yet | 0
People with job stress and an unhealthy lifestyle are at higher risk of coronary artery disease than people who have job stress but lead healthy lifestyles, found a study published in CMAJ (Canadian Medical Association Journal). ...
Cardiology May 13, 2013 | not rated yet | 0
(HealthDay)—Higher levels of the hormone estrogen are associated with an increased risk of sudden cardiac death in men and women, a new study suggests.
Cardiology May 11, 2013 | 4.5 / 5 (2) | 0
Type 1 (insulin-dependent) diabetes appears to increase the risk of heart disease, the leading cause of death among people with high blood sugar, partly by stimulating the production of calprotectin, a protein that sparks ...
Inflammatory disorders May 07, 2013 | 4.5 / 5 (2) | 0 |
(Medical Xpress)—A researcher at ETH Zurich is designing a realistic artery model with an implanted stent and is using a computer to simulate the blood flow through the stent. In doing so he is uncovering ...
Cardiology May 06, 2013 | 5 / 5 (4) | 0 |
A new stress test protocol that investigates reducing the use of perfusion imaging in low risk patients undergoing SPECT myocardial perfusion imaging for possible angina symptoms was found to be diagnostically safe, revealed ...
Cardiology May 05, 2013 | not rated yet | 0
Patients with increasing accumulations of coronary artery calcium were more than six times more likely to suffer from a heart attack or die from heart disease than patients who didn't have increasing accumulations, according ...
Cardiology May 02, 2013 | not rated yet | 0
(HealthDay)—Depression is relatively common in patients who undergo heart bypass surgery, and a new study finds that short-term use of antidepressants may aid patients' recovery.
Surgery May 01, 2013 | not rated yet | 0
The mantra that quality is more important than quantity is true when considering how social relationships influence depression, say U-M researchers in a new study.
Psychology & Psychiatry Apr 30, 2013 | 4.3 / 5 (4) | 0 |
(HealthDay)—For individuals with type 1 diabetes, low concentrations of vitamin D metabolites are not associated with an increased risk of subclinical atherosclerosis, according to a study published online ...
Diabetes Apr 12, 2013 | not rated yet | 0
The decision to perform an invasive procedure to open clogged arteries in the heart instead of first trying medication and lifestyle changes may not reduce a patient's risk of death or of a major cardiac ...
Cardiology Apr 09, 2013 | not rated yet | 0
(Medical Xpress)—A daily dose of fish oil may be good for a healthier heart in overweight, middle-aged men, according to researchers at The University of Western Australia.
Health Apr 09, 2013 | 5 / 5 (1) | 0
Cancer survivors who had chest radiation are nearly twice as likely to die in the years after having major heart surgery as similar patients who didn't have radiation, according to research in the American Heart Association ...
Cardiology Apr 08, 2013 | not rated yet | 0
(HealthDay)—Patients who experience acute chest pain, and have nonobstructive coronary artery disease (CAD), as determined by coronary computed tomographic angiography, have similarly benign outcomes as ...
Cardiology Apr 05, 2013 | not rated yet | 0
Male pattern baldness is linked to an increased risk of coronary heart disease, but only if it's on the top/crown of the head, rather than at the front, finds an analysis of published evidence in the online journal BMJ Op ...
Cardiology Apr 03, 2013 | 5 / 5 (2) | 0 |
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.
For more information about Coronary circulation, read the full article at
This text uses material from Wikipedia and is available under the GNU Free Documentation License.