Causes of ventricular fibrillation include which of the following? 1. Damage to the sinoatrial node 2. Digitalis overdose 3. Severe hypoxia 4. Myocardial infarction (MI)
a. 2 and 4 only
b. 1, 2, and 3 only
c. 2, 3, and 4 only
d. 1, 3, and 4 only
ANS: C
The most common causes include electrical shock, anesthesia, mechanical irritation of the heart, severe hypoxia, MI, and large doses of digitalis or epinephrine.
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