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Cholecystectomy after gastric bypass-incidence and complications.
Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery.
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2016 (English)In: Surgery for Obesity and Related Diseases, ISSN 1550-7289, E-ISSN 1878-7533, S1550-7289(16)30853-XArticle in journal (Refereed) Epub ahead of print
Abstract [en]

BACKGROUND: Although cholecystectomy incidence is known to be high after Roux-en-Y gastric bypass (RYGB) surgery, the actual increase in incidence is not known. Furthermore, the outcome of cholecystectomy after RYGB is not known.

OBJECTIVES: To estimate cholecystectomy incidence before and after RYGB and to compare the outcome of post-RYGB cholecystectomy with the cholecystectomy outcome in the background population.

SETTING: Nationwide Swedish multiregister study.

METHODS: The Swedish Register for Cholecystectomy and Endoscopic Retrograde Cholangiopancreatography (n = 79,386) and the Scandinavian Obesity Surgery Registry (n = 36,098) were cross-matched for the years 2007 through 2013 and compared with the National Patient Register.

RESULTS: The standardized incidence ratio for cholecystectomy before RYGB was 3.42 (2.75-4.26, P<.001); the ratio peaked at 11.4 (10.2-12.6, P<.001) 6-12 months after RYGB, which was 3.54 times the baseline level (2.78-4.49, P<.001). After 36 months, the incidence ratio had returned to baseline. The post-RYGB group demonstrated an increased risk of 30-day postoperative complications after cholecystectomy (odds ratio 2.13, 1.78-2.56; P<.001), including reoperation (odds ratio 3.84, 2.76-5.36; P<.001), compared with the background population. The post-RYGB group also demonstrated a higher risk of conversion, acute cholecystectomy, and complicated gallstone disease and a slightly prolonged operative time, adjusted for age, sex, American Society of Anesthesiologists class, and previous open RYGB.

CONCLUSION: Compared with the background population, the incidence of cholecystectomy was substantially elevated already before RYGB and increased further 6-36 months after RYGB. Previous RYGB doubled the risk of postoperative complications after cholecystectomy and almost quadrupled the risk of reoperation, even when intraoperative cholangiography was normal.

Place, publisher, year, edition, pages
2016. S1550-7289(16)30853-X
Keyword [en]
Bariatric surgery, Cholecystectomy, Gallstone, Gastric bypass, Obesity
National Category
Surgery
Identifiers
URN: urn:nbn:se:umu:diva-132456DOI: 10.1016/j.soard.2016.12.004PubMedID: 28185764OAI: oai:DiVA.org:umu-132456DiVA: diva2:1081576
Available from: 2017-03-14 Created: 2017-03-14 Last updated: 2017-03-14

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