Coronary Heart Disease

Coronary heart disease is the narrowing or blockage of the coronary arteries, usually caused by atherosclerosis. Atherosclerosis (sometimes called “hardening” or “clogging” of the arteries) is the buildup of cholesterol and fatty deposits (called plaques) on the inner walls of the arteries. These plaques can restrict blood flow to the heart muscle by physically clogging the artery or by causing abnormal artery tone and function.

Without an adequate blood supply, the heart becomes starved of oxygen and the vital nutrients it needs to work properly. This can cause chest pain called angina. If blood supply to a portion of the heart muscle is cut off entirely, or if the energy demands of the heart become much greater than its blood supply, a heart attack (injury to the heart muscle) may occur.

It is most commonly equated with atherosclerotic coronary artery disease, but coronary disease can be due to other causes, such as coronary vasospasm. It is possible for the stenosis to be caused by spasm.

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

Latest Spotlight News

Raising the curtain on cerebral malaria's deadly agents

Using state-of-the-art brain imaging technology, scientists at the National Institutes of Health filmed what happens in the brains of mice that developed cerebral malaria (CM). The results, published in PLOS Pathogens, reveal ...

Rare infant seizure disorder often missed

(HealthDay)—Many infants with a rare form of epilepsy known as infantile spasms aren't promptly diagnosed, and that delay can lead to devastating health consequences, new research indicates.

Want to give a good gift? Think past the 'big reveal'

Gift givers often make critical errors in gift selection during the holiday season, according to a new research article in Current Directions in Psychological Science, a journal of the Association for Psychological Science.

Autism brain response theory a dead end, study says

A new study out today in the journal Cerebral Cortex challenges the hypothesis that nerve cells in the brains of individuals with Autism Spectrum Disorders do not reliably and consistently respond to external stimuli.