Cardiac Death

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Unexpected natural death from cardiac (heart) causes is called sudden cardiac death. There is sudden loss of consciousness within an hour of the onset of symptoms.

The most common cause of cardiac death in adults is atheroma in the artery of the heart muscle (coronary artery).  Death occurs due to prolonged lack of blood supply to the heart muscle which induces abnormal, irregular beat (arrhythmia) or uncoordinated contraction of muscle of the lower chambers (ventricular fibrillation).

Another major cause of cardiac death is left ventricular hypertrophy due to longstanding high blood pressure. Other causes are narrowing of a major coronary artery, clot (thrombus) in the artery, heart failure, myocardial infarction, heart valve disease, congenital heart disease, inflammation, etc.

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