Key result
Preoperative P-wave dispersion was significantly associated with an increased risk of postoperative atrial fibrillation after CABG (HR 1.05; 95% CI 1.001-1.103; P=0.048).
Why the study?
Preoperative left atrial remodeling can predispose to postoperative atrial fibrillation, and this study aimed to assess whether P-wave dispersion and left atrial volume index serve as preoperative predictors of POAF after CABG.
Do preoperative P-wave dispersion and LAVI predict postoperative atrial fibrillation in patients undergoing CABG?
Cohort (n=42)
Do preoperative P-wave dispersion and LAVI predict postoperative atrial fibrillation in patients undergoing CABG?
Hazard Ratio: 1.05 (95% CI 1.001–1.103)
p-value: p=0.048
Preoperative P-wave dispersion, but not left atrial volume index, is a significant predictor of postoperative atrial fibrillation in patients undergoing CABG.
Preoperative P-wave dispersion may flag higher POAF risk after CABG but should not yet change practice; this cohort association leaves open prospective validation.
Preoperative left atrial remodeling as Postoperative atrial fibrillation (POAF) predisposing factors could be measured by left atrial volume index (LAVI) and P-wave dispersion. This study aimed to assess P-wave dispersion and LAVI as preoperative predictors of POAF among patients who underwent Coronary Artery Bypass Graft (CABG). An analytical retrospective cohort study was performed on patients who underwent CABG. The P-wave dispersion and POAF were evaluated based on documented ECG results. LAVI size was collected from echocardiographic reports. Hazard ratios of P-wave dispersion and LAVI for POAF were analyzed using Cox proportional hazard model. A total of 42 subjects (57 ± 1 years) were included in this study. POAF occurred in 28.6% of patients at a median of 2 days after CABG. P-wave dispersion was significantly longer in patients in whom AF was developed (53.03 ± 3.82 ms vs 44.01 ± 1.98ms, p:0.028), while LAVI difference was not significant. The Cox proportional hazard model showed a significant association between P-wave dispersion and risk of POAF (HR 1.05, CI95%, 1.001-1.103; P = 0.048). There was no association between LAVI and risk of POAF (HR 1.003, CI 95%, 0.965-1.044; P = 0.864). P-wave dispersion is a predictor of POAF in patients who underwent CABG. Risk stratification using P-wave dispersion enables clinicians to identify high-risk patients before CABG surgery.
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Achmad et al. (2021) conducted a cohort in Postoperative atrial fibrillation after CABG (n=42). P-wave dispersion was evaluated on Postoperative atrial fibrillation (POAF) (HR 1.05, 95% CI 1.001-1.103, p=0.048). Preoperative P-wave dispersion was significantly associated with an increased risk of postoperative atrial fibrillation after CABG (HR 1.05; 95% CI 1.001-1.103; P=0.048).
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