(364) MVP ECG Risk Score as Predictor of Postoperative Atrial Fibrillation in CABG Procedure

Introduction: Atrial fibrillation (AF) is one of the most common serious cardiac rhythm disturbances and is responsible for substantial morbidity and mortality in the general population. A simpler tool to identify patients at risk for AF by only using simple, noninvasive, and easily obtainable electrocardiographic markers known as the MVP ECG risk score (morphology-voltage-P-wave duration) was proposed by Alexander et al to predict occurrence of AF in patients with known or suspected coronary artery disease. The purpose of this study was to determine if there is association of the MVP ECG risk score in predicting Postoperative Atrial Fibrillation (POAF) in patients who underwent Coronary Artery Bypass Graft (CABG), which may be a useful tool for preoperative risk stratification.

Methods: A total of 118 patients without previous AF undergoing CABG were retrospectively studied. The MVP ECG risk score allocated points to their baseline ECG’s based on P-wave morphology in the inferior leads, P-wave voltage in lead 1, and P-wave duration in the inferior leads. The scores were classified under three risk groups either low, moderate or high risk for developing AF. Finally, patients were followed postoperatively until their last available ECG record to document presence of AF

Results: Mean Age was 65 and 89% were male. Patients with intermediate risk score were more likely to develop POAF compared to low risk group (odds ratio [OR] 9.4203, 95% confidence interval [CI] 3.37-26.4; p= < 0.001) and for every score increase, the odds of having POAF also increases (OR 2.8281, 95% CI 1.83-4.37; p= < 0.001).

Conclusions: This study demonstrates that the MVP ECG Score composed of easily measured electrocardiographic variables can predict the risk of having AF in patients who undergo CABG procedure.