Emced Khalil


Introduction: Atrial fibrillation (AF) which can be seen as a complication of the open heart surgery, may  cause serious problems on post operative period. The exact pathophysiology of AF is unknown but it is thought that factors such as oxidative stress might cause AF. Material and methods: We retrospectivily surveyed the serum gamma glutamyl transferase (GGT) levels which is accepted as a mediator of oxidative stres, for the Post Operative Atrial Fibrillation (POAF) that occur after of-pump versus on-pump Coronary Artery Bypass Graft (CABG) surgery. Our study included 183 cases ( 101 male, 72 female; median age 63 ± 4.3 years) of which CABG was performed. Results: Echocardiography, routine blood tests, electrocardiography (ECG), test for the serum GGT levels were performed in preoperative and postoperative  period to all participants. AF developed  in 34 patients (35 %) in Group I and 19 patients (20 %) in Group II. There were no significant differences between two groups (of-pump versus on-pump) in terms of gender, cardiovascular risk factors and the severity of the coronary artery disease. In patients who has developed AF in postoperative period had significantly higher serum GGT levels. Conclusion: This study has shown that serum GGT levels were found to be significantly higher in patients whom AF has developed after on-pump CABG surgery.


Coronary artery bypass graft, Serum gamma glutamyl transferase, atrial fibrillation.

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