Tagged: heart

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Pacemaker

Pacemaker: A device that supplies electrical impulses to the heart to maintain the heart beat at a regular rate. A pacemaker consists of a small electronic device and power source connected to the heart via an electrical wire. In...

Heart attack

Myocardial infarction

Myocardial infarction is popularly known as a heart attack, sudden death of part of the heart muscle characterized, in most cases, by severe unremitting chest pain. Each year in the US about 1 million people have...

heart

Mitral insufficiency

Failure of the mitral valve of the heart to close properly, which allows blood to leak back into the left atrium (upper chamber) when pumped out of the left ventricle (lower chamber). Also known...