| Título: | Predictive value of P-wave duration and dispersion in post coronary artery bypass surgery atrial fibrillation |
| Autores: |
Hashemi Jazi, Mohammad; Professor, Department of Cardiology, School of Medicine, Isfahan University Of Medical Sciences, Isfahan, Iran Amirpour, Afshin; Department of Cardiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran Zavvar, Reihaneh; Cardiovascular Research Center, Isfahan Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran Behjati, Mohaddeseh; Department of Cardiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran Gharipour, Mojgan; Researcher, Cardiac Rehabilitation Research Center, Isfahan Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran |
| Fecha: | 2012-06-28 |
| Publicador: | ARYA Atheroscler |
| Fuente: |
Ver documento |
| Tipo: | |
| Tema: | No aplica |
| Descripción: | BACKGROUND: Atrial fibrillation (AF) is the most common complication of cardiac surgery. Although it is managed easily, it can cause critical hemodynamic instabilities for intensive care patients. This observational study investigated the predictive power of P-wave dispersion (PWD) for the incidence of post cardiac surgery AF. METHODS: Among patients undergoing isolated coronary artery bypass grafting surgery (CABG), 52 patients were selected randomly. Before the operation, ejection fraction, regional wall motion abnormality, and mitral regurgitation were determined by echocardiography. Angiographic data provided information about stenosed vessels. PWD was measured before and after CABG. The incidence of post-CABG AF was determined by rhythm monitoring. RESULTS: There were no significant differences in age, sex, stenosed vessels, maximum P-wave duration, the prevalence of hypertension, smoking, mitral regurgitation, and regional wall motion abnormality between post-CABG AF and non-AF groups (P > 0.05). The mean prevalence of diabetes mellitus in post-CABG AF group was more than non-AF group (P = 0.036). The mean ejection fraction in post-CABG AF group was lower than non-AF group (P < 0.005). The mean PWD in AF group vs. non-AF group before CABG was 47.5 vs. 23.7 ms. The mean values of post-surgical PWD in AF and non-AF groups were 48.10 and 24.4 ms, respectively. Before CABG, the mean ejection fraction value and minimum P-wave duration in AF group were lower than non-AF group (P < 0.005). A reverse relation was present between minimum P wave duration and PWD (P < 0.001). There was a negative association between high ejection fraction values and decreased PWD (P = 0.002). CONCLUSION: Our data suggested minimum P wave duration, PWD, and low ejection fraction are as good predictors of AF in patients undergoing isolated CABG. The absence of differences in age, sex, smoking, hypertension, mitral regurgitation, and regional wall motion abnormality in our study was in contrast with other reports. On the other hand, increased rate of post-CABG AF in our diabetic patients with lower ejection fraction supports other studies. Overall, minimum P wave duration, PWD, and low ejection fraction can be used for patient risk stratification of AF after CABG. Keywords: Atrial Fibrillation, Coronary Artery Bypass Grafting, P-Wave Dispersion, Predictor |
| Idioma: | Inglés |
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