Predictive role of preoperative hemoglobin A1c levels on atrial fibrillation developing after coronary artery bypass graft surgery

Objective: Atrial fibrillation (AF) is the most common cardiac arrhythmia seen after coronary artery bypass(CABG) surgery. Hemoglobin A1c (HbA1c) levels known to have correlation with the developement of post operative atrial fibrillation (POAF) after CABG surgery. In our study we investigated the predictability of preoperative HbA1c levels for postoperative POAF developement in patients who underwent isolated on-pump CABG operation in our clinic. Method: We retrospectiveley studied 85 isolated on-pump CABG patients. Male to female ratio was 3:1 and mean age was 63-year old. All patients monitored in intensive care unit and than service for the occurance of AF. Relationship between HbA1c levels and developement of AF after surgery was evaluated. Results: This study designed as cross-sectional array and performed in our clinic. 85 patients included in the study. Mean age of cohort was 63.5 years and ratio of the male to female found 3:1. During postoperative monitoring period, 22 patients (25.8%) developed POAF (p>0.05) . HbA1c levels found significiantly high in POAF- positive group (p=0.003). Conclusions: According to our data, preoperative HbA1c levels could be used as a predictor of post operative AF in patients undergoing CABG surgery.