Incidence of regurgitation after the banded gastric bypass

Incidence of regurgitation after the banded gastric bypass

Author Arasaki, C. H. Google Scholar
Del Grande, J. C. Google Scholar
Yanagita, E. T. Google Scholar
Alves, AKS Google Scholar
Oliveira, DRCF Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Abstract Background: Frequent regurgitation is a common complication following Roux-en-Y gastric bypass (RYGBP). This study investigated the risk of becoming a chronic regurgitator, by considering silicone ring size and lower esophageal sphincter (LES) function, and their relationship with weight loss.Methods: 80 morbidly obese patients were randomly selected to undergo surgery using ring length of 62 mm (40 patients, group A) or 77 mm (40 patients, group B), with 6 months' postoperative follow-up. Preoperative esophageal manometry parameters were correlated with occurrence of chronic postoperative regurgitation. Patients were considered to present chronic regurgitation when this occurred on > 10 days/month.Results: the groups were homogeneous regarding age, gender, race, weight, BMI (47.8 +/- 6.1 vs 50.2 +/- 6.4 kg/m(2)) and obesity-related diseases. There were 15% more chronic regurgitators in group A than in group B. Chronic regurgitators in group A lost more weight than chronic regurgitators in group B (P=0.026) or nonchronic regurgitators in group A (P=0.016). A greater proportion of chronic regurgitators had LES hypotonia (mean respiratory pressure < 14 mmHg) than did nonchronic regurgitators (P=0.008). Logistic regression demonstrated that the chance of being a chronic regurgitator in group A was 4.5 times greater than in group B (P=0.046), and that the chance of a chronic regurgitator having LES hypotonia was seven times greater than of having normal LES pressure (P=0.006).Conclusion: Silicone ring size and LES hypotonia are independent prognostic factors for chronic regurgitation following RYGBP. Ring size and chronic regurgitation contribute significantly towards weight loss during the first 6 postoperative months.
Keywords morbid obesity
gastric bypass
manometry
gastroesophageal
reflux
silicone elastomers
Language English
Date 2005-11-01
Published in Obesity Surgery. Toronto: F D-communications Inc, v. 15, n. 10, p. 1408-1417, 2005.
ISSN 0960-8923 (Sherpa/Romeo, impact factor)
Publisher F D-communications Inc
Extent 1408-1417
Origin http://dx.doi.org/10.1381/096089205774859209
Access rights Closed access
Type Article
Web of Science ID WOS:000233506900009
URI http://repositorio.unifesp.br/handle/11600/28545

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