Home >  Term: ventricular fibrillation (VF)
ventricular fibrillation (VF)

A very fast, irregular heartbeat that is caused by abnormal impulses coming from several areas of the heart. These abnormal impulses take over the natural pacemaker function of the S-A node. The heartbeat is so fast that the heart does not have time to pump enough blood to the brain and body tissue, which may cause unconsciousness, cardiac arrest, and death.

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