Ventricular parasystolic rhythm masquerading as bilateral bundle branch block

Nabil El-sherif, Eugene Mascarenhas, Stephen Zaron, Philip Samet

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


A patient with sinus rhythm, complete left bundle branch block and 2:1 A-V conduction is described. A ventricular parasystolic rhythm, probably arising from the main left bundle branch system, occasionally gave rise to periods that simulated 3:2 A-V Wenckebach conduction with alternating bundle branch block when the parasystolic rate was approximately one third of the sinus rate. Fusion impulses with complete normalization of the QRS complex were observed. The value of analysis of long rhythm strips and repeated observations is stressed for unraveling complex disorders of cardiac rhythm.

Original languageEnglish (US)
Pages (from-to)171-174
Number of pages4
JournalJournal of Electrocardiology
Issue number2
StatePublished - 1973

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine


Dive into the research topics of 'Ventricular parasystolic rhythm masquerading as bilateral bundle branch block'. Together they form a unique fingerprint.

Cite this