Bodyweight affects mortality in an L-shape pattern in patients undergoing coronary bypass grafting.

Background: The role of body composition as a risk factor for adverse outcomesduring coronary artery bypass surgery (CABG) has been controversial. The goal of this study was to evaluate the effect of body weight on mortality in patients undergoing CABG.

Method: Using a large NIS database and ICD-10 coding for different bodyweight categories, we evaluated the effect of cachexia, overweight, obesity, and morbid obesity on in-hospital mortality after CABG.