Age and Sex Differences in the P-Wave Signal-Averaged Electrocardiogram in a Japanese Study Population.

Abstract

SUMMARYNormal P wave signal-averaged electrocardiogram (SAE) values were determined in 120 healthy Japanese adults (56 men, 64 women), aged 44.5±10.2 years (mean±SD). The P wave trigger method was used with a Fukuda FDX6500 recorder. We used bipolar Weak positive correlations were observed between fPd (F) and body surface area, fPd (F) and age, fPd (B) and body surface area, fPd (B) and age, fPd (C) and body surface area, and fPd (C) and age. There was no evident correlation, however, between either forward or backward RMS 20 and body surface area or between forward or backward RMS 20 and age. Differences in the normal P wave values between the sexes and age groups were evaluated in this study. (Jpn Heart J 2001; 42: 295-305) Key words: Signal-averaged P wave electrocardiogram, Japanese, Sex, Age ATRIAL late potential studies of P wave recordings by signal-averaged electrocardiography (SAE) have recognized the utility for identifying patients at risk for paroxysmal atrial fibrillation (Paf) during sinus rhythm.1,2) With Paf, filtered P duration (fPd) is long, the last 20-ms root mean square voltage (RMS 20 ) is reported to be low, and the occurrence of Paf can be predicted by such values during sinus rhythm. However, there have been no reports of normal P wave SAE values in Japan.We conducted a study in healthy Japanese subjects to determine the normal value of P waves SAE and to investigate age and sex differences. We expected a From the

Evolution of P‐Wave Morphology in Healthy Individuals: A 3‐Year Follow‐Up Study

“…4,20,21 However, signalaveraged P waves in healthy individuals are less well described. 24 In this study, we do not observe any significant changes in P-wave variables between BL and FU. Ishimoto and coworkers reported a PWD of 121 ± 9 ms in a normal control group.…”

“…23 These data were suggested to confirm the presence of age-related conduction disturbances but the lack of age-related Pwave prolongation has also been reported. 24 In this study, we do not observe any significant changes in P-wave variables between BL and FU. Possibly a 3-year follow-up period is too short for statistically significant age-related changes such as PWD prolongation to occur.…”

Improvement of Atrial Signal-Averaged Electrocardiographic Abnormalities After Radiofrequency Catheter Ablation in Persistent Atrial Flutter

“…Previous studies have reported that the FPD correlates with LAD, age, and history of hypertension. [11][12][13][14][15] It has been reported that the initial potentials correlate with indices of electrophysiologic measurements, although the statistical significance is weak. 16) In the present study, we demonstrated that the FPD correlates positively with interatrial conduction time, which is one of the electrophysiologic indices for atrial conduction abnormalities.…”