Evaluation of intra-abdominal pressure after laparoscopic and open gastric bypass

N. T. Nguyen, S. L. Lee, J. T. Anderson, L. S. Palmer, F. Canet, B. M. Wolfe

Research output: Contribution to journalArticlepeer-review

51 Scopus citations


Background: Increased intra-abdominal pressure (IAP) postoperatively can adversely affect cardiovascular, pulmonary, and renal function. In this prospective, randomized trial, we compared the IAP in morbidly obese patients after laparoscopic and open gastric bypass (GBP) surgery. Methods: 64 patients with a body mass index of 40 to 60 kg/m2 were randomized to undergo laparoscopic or open GBP. IAPs were obtained at baseline (after induction of anesthesia), immediately after the operation, and on post-operative day (POD) 1, 2, and 3. Intraoperative and postoperative fluid requirements, urine output, and creatinine clearance were recorded. Results: Demographics of the two groups were similar, IAP increased from baseline immediately after laparoscopic and open GBP (p < 0.05). IAP returned to baseline by POD 2 after laparoscopic GBP but remained elevated through POD 3 after open GBP. In fact, IAP was lower after laparoscopic GBP than after open GBP on POD 1, 2 and 3 (p < 0.05). The amount of intraoperative IV fluid was similar between groups, but laparoscopic GBP required less IV fluid and facilitated higher urine output postoperatively than open GBP. There was no significant difference in creatinine clearance between groups. Conclusions: Laparoscopic GBP resulted in significantly lower IAP, less postoperative fluid required, and greater postoperative urine output than open GBP.

Original languageEnglish (US)
Pages (from-to)40-45
Number of pages6
JournalObesity Surgery
Issue number1
StatePublished - 2001
Externally publishedYes


  • Bariatric surgery
  • Gastric bypass
  • Intra-abdominal pressure
  • Laparoscopy
  • Morbid obesity

ASJC Scopus subject areas

  • Surgery
  • Endocrinology, Diabetes and Metabolism
  • Nutrition and Dietetics


Dive into the research topics of 'Evaluation of intra-abdominal pressure after laparoscopic and open gastric bypass'. Together they form a unique fingerprint.

Cite this