As a medical professional with expertise in cardiology, I can explain the differences between accelerated idioventricular rhythm (AIVR) and ventricular tachycardia (VT). Accelerated idioventricular rhythm (AIVR) is a type of ventricular rhythm that occurs when the heart's ventricles beat at a rate faster than the normal intrinsic ventricular escape rhythm, but slower than what is considered ventricular tachycardia. The rate for AIVR is typically between 40 and 100 beats per minute (bpm). It is characterized by a regular rhythm with wide QRS complexes on an electrocardiogram (ECG), indicating that the electrical impulses are originating from within the ventricles rather than the atria or the normal conduction pathways. Ventricular tachycardia (VT), on the other hand, is a more serious arrhythmia. It is defined as three or more consecutive ventricular beats at a rate of at least 100-120 bpm or higher. VT is often associated with a higher risk of deteriorating into ventricular fibrillation, which can lead to sudden cardiac arrest. The QRS complexes in VT are also wide and regular, but the rate is significantly faster than that of AIVR. Both AIVR and VT originate in the ventricles, but the key difference lies in the rate of the heartbeats and the potential risks associated with each condition. While AIVR is generally considered a benign condition, VT is a medical emergency that requires immediate attention. read more >>

AIVR is currently defined as an enhanced ectopic ventricular rhythm with at least 3 consecutive ventricular beats, which is faster than normal intrinsic ventricular escape rhythm (��40 bpm), but slower than ventricular tachycardia (at least 100-120 bpm).read more >>