For a variety of reasons, something - such as a structural heart defect - causes the heart to beat out of control. This abnormal heart rhythm is known as ventricular fibrillation.
在这多种原因中，一些会导致心跳失常，比如结构性心脏缺陷，这种异常的心律被称作。
2
Most cases of ventricular fibrillation are linked to some form ofheart disease. Ventricular fibrillation is frequently triggered by a heart attack.
室颤通常是由心脏疾病引起的，比如心梗。
3
In several studies, this test alerted doctors to over 90 percent of people with atrial fibrillation, as confirmed by heart monitoring.