Predictors of Atrial Arrhythmias for Patients Undergoing Coronary Artery BypassGrafting

摘要

Coronary artery bypass grafting (CABG) is a commonly used and effective procedureto treat coronary artery disease. Atrial arrhythmias are common after CABG. The purpose of this descriptive study was to identify demographic, preoperative, intraoperative, and postoperative factors that predict atrial arrhythmias for post-CAB C patients. The convenience sample consisted of 162 CABG patients who were in sinus rhythm preoperatively. Patients were observed postoperatively for the development of atrial arrhythmias. Data were collected using a prospective chart review. Fifty-two patients (32.1%) developed postoperative atrial arrhythmias. Of patients who developed these arrhythmias, the arrhythmia occurred on the second or third postoperative day. Univariate predictors of postoperative atrial arrhythmias included age (p <.001) and presence of right coronary artery disease (p .004). Multivariate predictors of postoperative atrial arrhythmias included age (odds ratio by decade 1.93, 95% confidence interval 1.86-2.00, p .0007) and right coronary artery disease (odds ratio 2.67, 95% confidence interval 1.14-6.23, p .02). This model was 69.8% accurate in predicting postoperative atrial arrhythmias. The results of this study indicate that age and right coronary artery disease can be used to identify patients at increased risk for atrial arrhythmias after CABG.