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 language | English |
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Pages (from-to) | 95-101 |
Number of pages | 7 |
Journal | European Journal of Cardiology |
Volume | 12 |
Issue number | 2 |
Publication status | Published - 1980 |
ASJC Scopus subject areas
- Medicine(all)