reentrant arrhythmia

reentrant arrhythmia

Cardiac pacing An arrhythmia caused by a depolarization that spreads through one part of the heart, and then circles back to depolarize the part of the heart from which it began. See Arrhythmia.
Mentioned in ?
References in periodicals archive ?
The AV node conducts the ventricular-paced beat or a premature ventricular contraction (PVC) back (ie, retrograde) to the atrium and depolarizes the atrium before the next atrial-paced beat, the impulse can then trigger the pacemaker to repeatedly pace the ventricle, thereby generating a reentrant arrhythmia circuit known as PMT or endless-loop tachycardia.
Altered conduction and repolarization is the basis of the reentrant arrhythmias thus indicating association of prolonged QT interval with arrhythmogenesis78.