cardiac arrest

n. sudden cessation of all heart activity, cardiopulmonary arrest

A cardiac arrest, also known as cardiorespiratory arrest, cardiopulmonary arrest or circulatory arrest, is the abrupt cessation of normal circulation of the blood due to failure of the heart to contract effectively during systole."Arrested" blood circulation prevents delivery of oxygen to all parts of the body. Cerebral hypoxia, or lack of oxygen supply to the brain, causes victims to lose consciousness and to stop normal breathing. Brain injury is likely if cardiac arrest is untreated for more than 5 minutes, although new treatments such as induced hypothermia have begun to extend this time. To improve survival and neurological recovery immediate response is paramount.
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Cardiac arrest may refer to:Cardiac arrest, a medical conditionCardiac Arrest (film), a 1980 filmCardiac Arrest (TV series), BBC television drama"Cardiac Arrest (song)", a 1981 song by Madness
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Cardiac arrest n. Abbr. CA A sudden cessation of cardiac function, resulting in loss of effective circulation. [more]Cardiac arrest - Community and Resources

Noun
1. absence of systole; failure of the ventricles of the heart to contract (usually caused by ventricular fibrillation) with consequent absence of the heart beat leading to oxygen lack and eventually to death
(synonym) asystole, cardiopulmonary arrest
(hypernym) pathology

Sudden cessation of the beating of the heart.