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Updated: Jul 20, 2026
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Laparoscopic Radical Gastrectomy for Remnant Gastric Cancer
Published on: October 31, 2025
Acute changes in renal function after laparoscopic gastric surgery for morbid obesity
Sunil K Sharma1, Jerry McCauley, Daniel Cottam
1Surgical Weight Control Center, Las Vegas, Nevada USA.
Summary
Acute renal failure (ARF) after laparoscopic gastric bypass is uncommon (2.3%). High BMI, prior kidney issues, long surgeries, and low blood pressure increase ARF risk in bariatric surgery patients.
Area of Science:
- Nephrology
- Bariatric Surgery
- Surgical Complications
Background:
- Acute renal failure (ARF) is a significant complication impacting patient health and survival.
- Limited data exists on ARF risk and outcomes following laparoscopic gastric bypass.
Purpose of the Study:
- To investigate the incidence and predictive risk factors of ARF in patients undergoing laparoscopic gastric bypass.
- To assess the impact of ARF on patient outcomes after this bariatric procedure.
Main Methods:
- Retrospective analysis of 1800 patients who underwent laparoscopic gastric bypass between 1997 and 2003.
- Data collection included demographics, comorbidities, surgical details, and outcomes, with comparison to a matched control group.
Main Results:
- The incidence of ARF was 2.3% (42 patients) among the 1800 patients.
- Six patients required dialysis, with two becoming dialysis-dependent; ARF resolved in others.
- Risk factors identified include BMI >50, pre-existing chronic renal failure, extended operative times, and intraoperative hypotension.
Conclusions:
- ARF is an infrequent complication of laparoscopic gastric bypass.
- Specific patient and operative factors predict the risk of developing ARF post-surgery.
- Preoperative normal renal function was restored within six months for all affected patients.
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