1. Normal sinus rhythm
2. Accelerated idioventricular rhythm (a.k.a. slow ventricular tachycardia)
3. Non-specific T wave abnormality
An idioventricular rhythm is very similar to ventricular tachycardia (VT), except the ventricular rate is less than 60. All other characteristics of ventricular tachycardia apply, including the Brugada criteria. The QRS morphology in this ECG is of the right bundle branch block pattern and is monophasic upward in the precordial leads indicating a ventricular origin of the rhythm. An idioventricular rhythm is frequently referred to as a "slow ventricular tachycardia” or “slow VT". When the ventricular rate is between 60-100, it is referred to as an accelerated idioventricular rhythm or AIVR. This is a hemodynamically stable rhythm that occurs commonly after myocardial infarction and no treatment is needed.
