Long-term self-reported symptom prevalence of early and late dumping in a patient population after sleeve gastrectomy, primary, and revisional gastric bypass surgery

Abstract

BackgroundEarly and late dumping are side effects of bariatric surgery. Almost no data are available on the prevalence of dumping after different surgical procedures. ObjectivesComparison of the relative risks of dumping in a large population of patients having undergone primary Roux-en-Y gastric bypass (pRYGB), sleeve gastrectomy (SG), or revisional RYGB (rRYGB; after removal of band). SettingBariatric center of a teaching hospital. MethodsIn this descriptive cohort study, all patients who underwent a pRYGB (n = 615), SG (n = 157), or rRYGB (n = 274) between 2008 and 2011 were approached by mail and asked to complete and return a questionnaire of general and disease-specific questions related to dumping syndrome. Relative risks (RR) were calculated (mean with 95% confidence intervals) by comparing the prevalence of high suspicion for early and late dumping between different surgical procedure groups and primary gastric bypass surgery. ResultsThe questionnaire was completed and returned by 593 (57%) of 1046 patients. Fewer patients with SG were at high suspicion of early dumping than after pRYGB (RR [95% confidence interval] .46 [.22–.99], P = .049). No differences for early dumping were seen between rRYGB and pRYGB (RR 1.21 [.77–1.91], P = .40). More patients were at high suspicion for late dumping after rRYGB compared with after pRYGB (RR 1.78 [1.09–2.90] P = .021). No differences for late dumping were seen between SG and pRYGB (RR .59 [.22–1.61], P =.30). ConclusionFewer complaints of early dumping are reported after SG, while patients report more complaints of late dumping after rRYGB compared with pRYGB.