ABSTRACT
To determine causes and risk factors for chest reexploration after coronary artery bypass grafting surgery [CABG]. In a retrospective study, the medical records of 105 patients that had chest reexploration CABG surgery from 2004 to 2006 in Madani Heart Hospital were assessed. Frequency of reexploration was 105 1904 [5.5%]. In addition, the records of 195 patients without chest reexploration that randomly selected from 1799 patients, were assessed,the medical records of patients were studied regarding demographic characteristics, causes and risk factors of chest reexploration. Data analysis was conducted by SPSS software using descriptive and inferential statistics. The findings indicated that most frequent causes for chest reexploration were bleeding [36.2%] and cardiac tamponade [30.5%]. In addition, risk factors for chest reexploration were weight and body mass index [BMI] of patient, preoperative PT value, and preoperative use of Plavix. Reexploration rate in this study was close to other studies results