The effect of obesity on laparoscopic and robotic-assisted colorectal surgery outcomes: an ACS-NSQIP database analysis

Jeffrey N. Harr, Ivy N. Haskins, Richard L. Amdur, Samir Agarwal, Vincent Obias

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


Advantages of robotic-assisted colorectal surgery have been reported, but the effect on outcomes between obese and non-obese patients undergoing laparoscopic and robotic-assisted colorectal surgery remains unclear. Patients who underwent elective laparoscopic and robotic colon or rectal resections between 2012 and 2014 were identified in the ACS-NSQIP database. Propensity score matching was performed to determine the effect of obesity on laparoscopic and robotic-assisted 30-day surgical outcomes. 29,172 patients met inclusion criteria; 27,693 (94.9%) underwent laparoscopic colorectal surgery while 1479 (5.1%) underwent robotic-assisted surgery. Mean BMI was 28.4 kg/m2 and 35% of patients had a BMI ≥30 kg/m2. A 10-to-1 propensity matching of laparoscopic to robotic approaches was performed, resulting in 14,770 (90.9%) laparoscopic patients and 1477 (9.1%) robotic-assisted patients available for analysis. Robotic-assisted surgery was associated with lower conversion to laparotomy (2.4 vs 3.4%; p = 0.04) and decreased length-of-stay (4.5±3.2 vs 5.1±4.5 days; p < 0.0001). After adjusting for BMI and surgical approach, obese patients undergoing robotic-assisted surgery had a reduced odds ratio for developing prolonged ileus (p = 0.03). Robotic-assisted colorectal surgery is associated with fewer conversions to laparotomy and shorter length-of-stays compared to laparoscopic surgery. Risk of prolonged ileus is significantly reduced in obese patients undergoing a robotic-assisted approach.

Original languageEnglish (US)
Pages (from-to)317-323
Number of pages7
JournalJournal of Robotic Surgery
Issue number2
StatePublished - Jun 1 2018
Externally publishedYes


  • Body mass index
  • Laparoscopic colorectal surgery
  • Laparotomy conversion rate
  • Obesity
  • Robotic colorectal surgery

ASJC Scopus subject areas

  • Surgery
  • Health Informatics


Dive into the research topics of 'The effect of obesity on laparoscopic and robotic-assisted colorectal surgery outcomes: an ACS-NSQIP database analysis'. Together they form a unique fingerprint.

Cite this