A: In most cases, it's probably ventricular fibrillation that causes these sudden deaths from fear.

答：大多数情况下，很可能是由于心室颤动导致恐惧引发的突然死亡。

youdao

Most cases of ventricular fibrillation are linked to some form of heart 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。

youdao

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。

youdao

Hazlett is worried that this reflects lower sales of Cordarone for ventricular fibrillation and Refacto for hemophilia.

FORBES: Is Wyeth Getting An Easy Pass?

The electrical activity fails to die away properly, and moves around the muscle in a turbulent pattern causing an arrhythmia known as ventricular fibrillation.

BBC: Virtual heart

Ventricular fibrillation (VF) is one type of arrhythmia that is deadly.

CNN: Heart arrhythmias