Accelerated Idioventricular Rhythm | Reference Guide
EKG Features
Rate: 50-120 bpmRhythm: Regular
P Wave: Absent
PR Interval: Not measurable
QRS: Wide (>0.10 sec), bizarre looking
Accelerated idioventricular rhythm (AIVR) is a ventricular rhythm with three or more consecutive monomorphic beats with gradual onset. AIVR occurs when the ectopic ventricular pacemaker rate is greater than the sinus node rate. It is usually benign.
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Authors and Reviewers
Authored by Thomas O Brien. Medically reviewed by Dr. Jonathan Keroes, MD
Last Update: 11/8/2021
