Key result
Initial potentials of the P-wave on a signal-averaged electrocardiogram correlated negatively with sinus node recovery time and sinoatrial conduction time (-0.37 ≤ r ≤ -0.30).
Why the study?
Do initial potentials of the P-wave on a signal-averaged ECG correlate with electrophysiologic measurements in the right atrium?
Observational (n=67)
Do initial potentials of the P-wave on a signal-averaged ECG correlate with electrophysiologic measurements in the right atrium?
Answers are grounded in this paper and cite their sources.
Initial potentials of the P-wave on signal-averaged ECG show a weak negative correlation with sinus node recovery time and sinoatrial conduction time.
The aim of this study was to determine whether initial potentials of the P-wave on a signal-averaged electrocardiogram (SAE) during sinus rhythm reflect indices of electrophysiologic measurements in the high lateral right atrium. A total of 67 patients underwent P-wave signal averaging during electrophysiologic testing. The correlation between root mean square voltages for the initial 10 and 20 msec of the P-wave on the SAE and indices of electrophysiologic measurements, sinus node recovery time (SRT) and sinoatrial conduction time (SACT), obtained from programmed stimuli, was evaluated. It was found that the initial potentials of the P-wave on the SAE correlated negatively with SRT and SACT (-0.37 < or = r < or = -0.30). It was concluded that the initial potentials correlated with indices of electrophysiologic measurements, although the statistical significance was weak.
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Sasaki et al. (1998) conducted an observational in Patients undergoing electrophysiologic testing (n=67). P-wave signal averaging vs. Electrophysiologic measurements (SRT and SACT) was evaluated on Correlation between root mean square voltages for the initial 10 and 20 msec of the P-wave on the SAE and SRT/SACT (r between -0.37 and -0.30). Initial potentials of the P-wave on a signal-averaged electrocardiogram correlated negatively with sinus node recovery time and sinoatrial conduction time (-0.37 ≤ r ≤ -0.30).
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