What is the rate of accelerated idioventricular rhythm?

Accelerated idioventricular rhythm (AIVR) is characterized by a ventricular rate that typically falls within the range of 50 to 100 beats per minute. This rhythm often occurs in situations such as myocardial ischemia or in the setting of reperfusion therapy following a myocardial infarction. The ventricular escape rhythm speed is considered accelerated when it exceeds the typical rate, thus placing it in this specific range.

In understanding AIVR, it's essential to recognize that it often represents a protective mechanism of the heart, where the ventricles take over pacing due to failure or absence of higher pacemaker activity. Rates below 50 bpm would indicate a slower escape rhythm, rather than an accelerated one. Rates exceeding 100 bpm would indicate a different type of tachyarrhythmia. This classification helps healthcare professionals diagnose and manage patients appropriately based on the electrical activity observed in their heart rhythms.