Ventricular Fibrillation by ECG Finding

**Semantic type:** Finding

**Definition:** An electrocardiographic finding of a rapid grossly irregular ventricular rhythm with marked variability in QRS cycle length, morphology, and amplitude. The rate is typically greater than 300 bpm. (CDISC)

**Synonyms:** - VENTRICULAR FIBRILLATION - VF - VFib - Ventricular Fibrillation - Ventricular Fibrillation by EKG Finding - Ventricular fibrillation