Impact of coronary artery bypass grafting on ventricular repolarization indexes

Abstract Funding Acknowledgements Type of funding sources: None. Introduction Ventricular repolarization indexes (VRI) tend to be altered in patients with chronic coronary artery disease, which are associated a higher risk malignant arrhythmias and mortality. Coronary bypass grafting (CABG) is capable reducing mortality, as well improving arrhythmic burden this population. However, we do not know whether these benefits can explained by improvement VRI. Purpose To determine there VRI after CABG, analyse possible effects clinical surgical variables on indexes. Methodology A total 150 who underwent CABG were included. Through the evaluation preoperative hospital discharge electrocardiograms, QT interval, interval from peak end T wave (Tp-Te) Tp-Te/ ratio analysed. The values obtained before compared, their association variables. Results population was predominantly male (77.3 %), mean age 61.6±8.3 years-old LVEF 58.8±10.6 %. reduction (398.93±34.68 vs 365.47±50.38 ms, p < 0.001), Tp-Te (72.2±17.2 61.6±19.5 0.001) (0.18±0.17 0.04±0.05, = 0.004) CABG. There no correlation between Conclusion had important impact intervals, ratio, suggesting that acute perfusion directly