Morbid Obesity does not Increase Morbidity or Mortality in Robotic Cardiac Surgery

Abstract

Objective Morbid obesity (body mass index S 35 kg/m2)usually confers a higher perioperative risk in cardiac surgery. Robotic cardiac surgery may have many advantages for these high-risk patients. Methods We retrospectively reviewed patients undergoing robotic cardiac surgery from July 2013 to April 2017 at our institution. We compared the outcomes of morbidly obese patients versus nonobese patients. Results A total of 486 patients underwent robotic cardiac surgery (322 men, median age = 65 years). The robotic procedures were the following: totally endoscopic beating heart coronary artery bypass (n = 263), mitral valve surgery (n = 138), arrhythmia surgery (n = 33), adult congenital surgery (n = 16), pericardiectomy (n = 11), and others (n = 25). The cohorts were divided into the following: normal weight (body mass index < 25, n = 123), overweight (body mass index = 25 to < 30, n = 182), obesity (body mass index = 30 to < 35, n = 105), and morbid obesity (body mass index S 35, n = 76). Morbidly obese patients had a higher rate of hypertension, dyslipidemia, and diabetes mellitus compared with normal or overweight patients. There were no significant differences in morbidity, mean length of intensive care unit stay (2.10 ± 4.27 days), and hospital stay (4.48 ± 5.61 days) among the groups. In-hospital mortality was 1.4% (7/486) with nonsignificant difference. Conclusions Outcomes of robotic heart surgery in morbidly obese patients in our center were acceptable. Over a broad range of cardiac surgical procedures, morbid obesity was not associated with increased morbidity or mortality when these procedures were performed using a robotic approach. These findings can be beneficial in managing this challenging group of patients.