Predicting Mortality Risk in Patients Undergoing Bariatric Surgery

摘要

A study of 1,465 patients undergoing laparoscopic and open bariatric surgery at a university medical center found that compared with patients who have mild or no comorbidities, patients with major comorbidities have a greater risk of complications (4.1 versus 1.2 percent; P < .003) and a greater risk of mortality (2.3 versus 0.2 percent; P < .003; number needed to harm = 48).4 The same researchers collected two additional years of data, increasing the sample size to 2,075 patients.5 Multivariate analysis was used to identify four independent variables that predict postoperative mortality risk: body mass index (BMI), male sex, hypertension, and a composite variable of pulmonary embolism risk (i.e., previous venous thromboembolism, pulmonary hypertension, preoperative vena cava filter, or hypoventilation due to obesity).