Relation between the behaviors of P-wave and QT dispersions in elderly patients with heart failure.

Abstract:

OBJECTIVE:To assess the relation between P-wave and QT dispersions in elderly patients with heart failure. METHODS:Forty-seven elderly patients (75.6+/-6 years) with stable heart failure in NYHA functional classes II or III and with ejection fractions of 37+/-6% underwent body surface mapping to analyze P-wave and QT dispersions. The degree of correlation between P-wave and QT dispersions was assessed, and P-wave dispersion values in patients with QT dispersion greater than and smaller than 100 ms were compared. RESULTS:The mean values of P-wave and QT dispersions were 54+/-14 ms and 68+/-27 ms, respectively. The correlation between the 2 variables was R=0.41 (p=0.04). In patients with QT dispersion values > 100 ms, P-wave dispersion was significantly greater than in those with QT dispersion values < 100 ms (58+/-16 vs 53+/-12 ms, p=0.04 ). CONCLUSION:Our results suggest that, in elderly patients with heart failure, a correlation between the values of P-wave and QT dispersions exists. These findings may have etiopathogenic, pathophysiologic, prognostic, and therapeutic implications, which should be investigated in other studies.

journal_name

Arq Bras Cardiol

authors

Szlejf C,Rays J,Gebara OC,Vieira NW,Pierri H,Nussbacher A,Serro-Azul JB,Samesima N,Pastore CA,Wajngarten M

doi

10.1590/s0066-782x2002001400007

subject

Has Abstract

pub_date

2002-11-01 00:00:00

pages

494-9

issue

5

eissn

0066-782X

issn

1678-4170

pii

S0066-782X2002001400007

journal_volume

79

pub_type

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