Coronary Heart Disease

Keeping the heart's electrical system running

A drug commonly used to treat high blood pressure has been shown to significantly reduce the risk of blocked electrical impulses to the heart and could be an effective treatment for certain types of heart disease known as ...

Jun 28, 2016
popularity26 comments 0

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

Two in ten Alzheimer's cases may be misdiagnosed

(HealthDay)—Alzheimer's disease is often misdiagnosed, possibly causing undue stress for those who don't have the disease but are told they do, and delays in treatment for others, two new studies reveal.

Genome-editing 'toolbox' targets multiple genes at once

A Yale research team has designed a system to modify, or edit, multiple genes in the genome simultaneously, while also minimizing unintended effects. The gene-editing "toolbox" provides a user-friendly solution that scientists ...