Escape–Noncapture Bigeminy (revision)

Escape–capture bigeminy is a persistent form of bigeminal rhythm that is occasionally observed and depends on two automatic foci with different escape intervals. We recently encountered a patient presenting with pacemaker failure, who nevertheless manifested a persistent apparent bigeminal rhythm, which can be explained by the same principles that govern escape–capture bigeminy. We have dubbed this phenomenon “escape–noncapture bigeminy.”