The power of three: Atrial rate limit power‐on‐reset — A non‐electromagnetic cause of pacemaker‐induced extracardiac stimulation

Abstract

BackgroundPower‐on reset (PoR) is most commonly due to electromagnetic interference. Full PoR results in a switch to an inhibited mode (VVI) pacing and resets pacing outputs to maximal unipolar settings, leading to extracardiac stimulation.MethodsWe present a case of PoR occurrence in the absence of electromagnetic interference, resulting in pectoral stimulation triggered by violation of the atrial rate limit.ConclusionsIt is useful for clinicians to recognizethe occurrence of PoR in the setting of atrial limit violation andthe appropriate management in such circumstances.