Robotic Surgery is More Expensive with Similar Outcomes in Sleeve Gastrectomy: Analysis of the NIS Database

Abstract

The aim of this study was to compare postoperative outcomes after robotic-assisted and laparoscopic bariatric sleeve gastrectomy (SG). Sleeve gastrectomy is traditionally performed using laparoscopic techniques. Robotic-assisted surgery enables surgeons to perform minimally invasive SG, but with unknown benefits. Using a national database, we compared postoperative outcomes after laparoscopic SG and robotic-assisted SG. National data from individuals undergoing elective SG in the National Inpatient Sample database between 2011 and 2013 were analyzed. Propensity score matching was used to match robotic and laparoscopic groups by demographics, comorbidities, and hospital characteristics. The matching cohorts were compared. A total of 26,195 patients who underwent elective SG for morbid obesity were included. Of these, 25,391 (96.9%) were completed via laparoscopy, whereas 804 (3.1%) were performed with robotic assistance. There were no significant differences in demographics and subsequent postoperative complications. The inhospital mortality was similar. Length of hospital stay was statistically different, with a mean of 1.88 in laparoscopic versus 2.08 days in robotic (P < 0.001). Higher total hospital charges were noted in the robotic-assisted SG group (median US$38,569 vs US$54,658, P < 0.001). These differences were evident even after adjusting for confounding factors: wound infection, atelectasis, bowel obstruction, pneumonia, and bowel obstruction (P < 0.001).