Effect of CABG on P-wave Dispersion and the Relationship between AF and P-wave Dispersion

Shahdad Khosropanah; MH  Nemati; O  Bazargan Lari; N  Zare

International Cardiovascular Research Journal

The Official Annually Journal of Cardiovascular Research Center, Shiraz University of Medical Sciences

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Effect of CABG on P-wave Dispersion and the Relationship between AF and P-wave Dispersion

Authors:

Shahdad Khosropanah^1,*,

MH Nemati²,

O Bazargan Lari¹,

N Zare³

1Cardiovascular Research Center, Shiraz University of Medical Sciences, Shiraz, Iran

2Department of Cardiac surgery, Shiraz University of Medical Sciences, Shiraz, Iran

3Department of Biostaistics, Shiraz University of Medical Sciences, Shiraz, Iran

International Cardiovascular Research Journal:Vol. 3, issue 2; e68401

Published online:Jun 30, 2009

Article type:Research Article

Received:Mar 10, 2018

Accepted:Jun 30, 2009

How to Cite:Shahdad KhosropanahMH NematiO Bazargan LariN ZareEffect of CABG on P-wave Dispersion and the Relationship between AF and P-wave Dispersion.3(2):e68401.

Abstract

Background: Atrial fibrillation (AF) is a common complication after CABG. It is associated with doubling of
mortality rate and increased incidence of CHF, MI, renal insufficiency, and stroke which prolongs hospital stay
and is associated with increased rate of re-hospitalization.
In this study we examined the effect of CABG on atrial electrophysiology as reflected by P-wave dispersion.
Patients and Methods: A total of 197 consecutive patients undergoing elective CABG due to CAD were monitored
for 4 days in hospital and their daily ECGs were obtained. .Differences in P-wave dispersions were compared
between the patients who developed AF and those maintaining sinus rhythms.
Results: Post-operative AF occurred in 18.2% of patients, who showed statistically significant increase of P
wave duration, in lead aVL of pre-op ECG (79.4±25.0 vs 70.1±22.4; P = 0.032). In addition, P wave dispersion
was significantly increased on first and third days of post-op period (77.2±22.0 vs 67.5±22.2; P=0.018) and
(69.4±22.7 vs 61.1±20.3; P= 0.035) respectively, in those developing AF rhythm compared to patients remaining
in sinus rhythm .
Conclusion: Our result indicates that P-wave dispersion is a risk factor for development of AF in patients undergoing
CABG.

Keywords

P-wave Dispersion

AF

CABG

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