Factors associated with health indicators in patients undergoing coronary artery bypass surgery

Background: The main goals of coronary artery bypass graft (CABG) surgery f or most patients are to relieve angina, to improve function capacity, to re turn to work, and to improve health. ri. limited amount of information is a vailable regarding the various attributes that are associated with achievin g these goals. Study Objectives: To investigate different patient attributes affecting the se outcomes. Design: Prospective data collection. Setting: Fourteen medical centers that perform CABG surgery in Israel. Patients: The 4,012 patients who underwent CABG surgery during 1994. Measurements: Trained nurses collected data using structured questionnaires prior to and 4 to 5 months after the operation. Using logistic regression, four risk models were created to the following health indicators: recurren ce of angina, functional capacity, return to work, and perception of health . Candidate variables were sociodemographic details, major comorbidities, r isk factors for cardiac disease, and severity of cardiac disease. Results: The mean age of the patients was 63.8 years old, 79.3% were men, 5 9.9% were elective operations, and left main disease was found in 17.3%. Mu ltivariate logistic regression revealed that the variables that significant ly contributed to the ee or more of the models were Sephardic Jewish origin , female gender, left ventricular. dysfunction, and diabetes mellitus. Conclusions: There is a similarity between risk factors of various health i ndicators in CABG surgery patients. Thus, it is possible to define a popula tion at high risk that may not benefit from the procedure.