Incomplete interpolation caused by sinoatrial pacemaker shift. A report of two cases

F. Franchi, L. Padeletti

Research output: Contribution to journalArticlepeer-review

Abstract

Shortened return cycles after premature atrial stimulation (PAS) are commonly referred to as sinoatrial entrance block and exit delay at the sinoatrial junction or sinusnode reentries. In the 2 reported cases PAS at critical coupling intervals was followed by shortened return cycles characterized by a changed high right electrogram (and surface P waves in 1 case) and a normal sequence of atrial activation with unaltered intraatrial conduction. These changes lasted for some beats and a concomitant shorter or longer atrial cycle length was observed. Electrophysiological events furnish indirect evidence of sinoatrial pacemaker shift as a cause of incomplete interpolation in man.

Original languageEnglish
Pages (from-to)95-101
Number of pages7
JournalEuropean Journal of Cardiology
Volume12
Issue number2
Publication statusPublished - 1980

ASJC Scopus subject areas

  • Medicine(all)

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