Definitions for ventricular fibrillation
Princeton's WordNet
ventricular fibrillation(noun)
fibrillation of heart muscles resulting in interference with rhythmic contractions of the ventricles and possibly leading to cardiac arrest
Wiktionary
ventricular fibrillation(Noun)
Condition where the cardiac muscle is contracted irregularly and rapidly.
U.S. National Library of Medicine
Ventricular Fibrillation
A potentially lethal cardiac arrhythmia that is characterized by uncoordinated extremely rapid firing of electrical impulses (400-600/min) in HEART VENTRICLES. Such asynchronous ventricular quivering or fibrillation prevents any effective cardiac output and results in unconsciousness (SYNCOPE). It is one of the major electrocardiographic patterns seen with CARDIAC ARREST.
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