Effect of Bady Mass Index on patients prognosis after heart surgery

Introduction: patients with high or low body mass index may be more at risk of death and complications after surgery, especially in patients who have coronary artery bypass grafting may be the outcome could be more specific, so we decided to evaluate effect bmi and its correlation with survival and outcome in cardiac surgery.methods: a cross sectional study of 345 patients who underwent surgery from 2010 till 2013 coronary artery bypass grafts were performed in our center . each of the patients was monitored for a year. patient information was collected. then in terms of body mass index and its impact on patient outcomes after surgery were studied. results: among patients with low body mass index (bmi<20), patients with a high body mass index (bmi>30) as well as patients with normal body mass index were not significantly associated with mortality after surgery. most obese patients were at risk of postoperative mi (p=0.02). pneumonia after surgery in patients with high body mass index than patients with a normal body mass index and were more common in lean subjects (p=0.023).conclusion: in our study we find that high or low bmi alone increased mortality after cardiac surgery is not. also, obese people are at higher risk of postoperative complications.