Atrial premature beat bigeminy with sinus beats conducted via the fast pathway and APBs via the slow pathway can cause regular RR intervals, mimicking accelerated junctional rhythm.
Case Report (n=1)
This case highlights a rare ECG phenomenon where APB bigeminy with alternating fast and slow pathway conduction mimics accelerated junctional rhythm with AV dissociation.
A 74-year-old female patient presented with atrial premature beat (APB) bigeminy. Sinus beats were conducted via the fast pathway (FP), while APBs were conducted via the slow pathway (SP). Two types of QRS complexes with different natures appeared alternately, yet the RR intervals remained regular, mimicking accelerated junctional rhythm complicated with interfering atrioventricular dissociation. This article explores the pathogenesis of this rare electrocardiographic phenomenon.
Li et al. (Thu,) conducted a case report in Atrial premature beat bigeminy (n=1). Atrial premature beat bigeminy with sinus beats conducted via the fast pathway and APBs via the slow pathway can cause regular RR intervals, mimicking accelerated junctional rhythm.