The most common reason for sudden cardiac arrest is a very chaotic heart rhythm (ventricular fibrillation), which occurs as a result of a heart attack.
心脏骤停的最常见原因是由心肌梗塞引起的心率极度紊乱（如室颤）。
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Previous studies have shown that earthquakes war or even the loss of a World Cup Soccer match can increase rates of death from sudden cardiac arrest in which the heart stops circulating blood.