Home >  Term: Ventricular tachycardia (VT)
Ventricular tachycardia (VT)

A fast heartbeat caused by abnormal impulses coming from a single area of the heart. These abnormal impulses take over the "pacemaker" function of the S-A node. The rapid heartbeat can produce symptoms of fainting, dizziness, weakness, blind spots, and potentially, unconsciousness and cardiac arrest.

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