TY - JOUR AU - Karabacak, Kubilay AU - Celik, Murat AU - Gokoglan, Yalcin AU - Kadan, Murat AU - Kaya, Erkan AU - Doganci, Suat AU - Yildirim, Vedat AU - Demirkilic, Ufuk PY - 2015/01/13 Y2 - 2024/03/29 TI - Frontal Planar QRS/T Angle Can Be a Prognostic Factor in the Early Postoperative Period of Patients Undergoing Coronary Bypass Surgery JF - The Heart Surgery Forum JA - HSF VL - 17 IS - 6 SE - DO - 10.1532/HSF98.2014440 UR - https://journal.hsforum.com/index.php/HSF/article/view/532 SP - E288-E292 AB - <p><b>Background:</b> Wide QRS/T angle reflects the ventricular repolarization heterogeneity and has been found in association with cardiac morbidity and mortality in various study populations. However, literature data about the availability of QRS/T angle in patients undergoing cardiac surgery has not yet been available.</p><p><b>Methods:</b> A total of 157 patients who underwent isolated coronary artery bypass surgery were included in this study. A preoperative 12-lead ECG was obtained one day before surgical procedure. The absolute difference between the frontal QRS wave axes and T-wave axes was defined as frontal planar QRS/T angle. Afterwards, patients were divided into two groups according to their frontal planar QRS/T angle (the cut-off value as 90°).</p><p><b>Results:</b> Group 1 consisted of 109 patients with frontal planar QRS/T angle of <90, and the remaining 48 patients with frontal planar QRS/T angle 90 were placed into group 2. Mean EuroSCORE was much higher in group 2. There were significant differences for positive inotropic agent usage (27.5% for group 1 versus 58.3% for group 2, <i>P</i> < .001) and the prevalence of postoperative atrial fibrillation (11.9% for group 1 versus 31.2% for group 2, <i>P</i> = .004) between the two groups. In multivariate logistic regression analysis, used to determine the independent predictors of positive inotropic usage in the early postoperative period, only frontal planar QRS/T angle (OR: 0.989, 95% CI: 0.981-0.997, <i>P</i> = .008) and EuroSCORE (OR: 0.792, 95% CI: 0.646-0.971, <i>P</i> = .025) were found to be statistically significant.</p><p><b>Conclusion:</b> We found that frontal planar QRS/T angle might be an important preoperative parameter in predicting the need for inotropic drugs in the early postoperative period following coronary artery bypass surgery.</p> ER -