Vivek N Prachand1, Marc Ward, John C Alverdy. 1. Section of General Surgery, Department of Surgery, University of Chicago Medical Center, 5841 S. Maryland Ave. MC 5036, Chicago, IL 60637, USA. vprachan@surgery
Abstract
OBJECTIVE: Increased body mass index is associated with greater incidence and severity of obesity-related comorbidities and inadequate postbariatric surgery weight loss. Accordingly, comorbidity resolution is an important measure of surgical outcome in super-obese individuals. We previously reported superior weight loss in super-obese patients following duodenal switch (DS) compared to Roux-en-Y gastric bypass (RYGB) in a large single institution series. We now report follow-up comparison of comorbidity resolution and correlation with weight loss. METHODS: Data from patients undergoing DS and RYGB between August 2002 and October 2005 were prospectively collected and used to identify super-obese patients with diabetes, hypertension, dyslipidemia, and gastroesophageal reflux disease (GERD). Ali-Wolfe scoring was used to describe comorbidity severity. Chi-square analysis was used to compare resolution and two-sample t tests used to compare weight loss between patients whose comorbidities resolved and persisted. RESULTS: Three hundred fifty super-obese patients [DS (n=198), RYGB (n=152)] were identified. Incidence and severity of hypertension, dyslipidemia, and GERD was comparable in both groups while diabetes was less common but more severe in the DS group (24.2% vs. 35.5%, Ali-Wolfe 3.27 vs. 2.94, p<0.05). Diabetes, hypertension, and dyslipidemia resolution was greater at 36 months for DS (diabetes, 100% vs. 60%; hypertension, 68.0% vs. 38.6%; dyslipidemia, 72% vs. 26.3%), while GERD resolution was greater for RYGB (76.9% vs. 48.57%; p<0.05). There were no differences in weight loss between comorbidity "resolvers" and "persisters". CONCLUSIONS: In comparison to RYGB, DS provides superior resolution of diabetes, hypertension, and dyslipidemia in the super-obese independent of weight loss.
OBJECTIVE: Increased body mass index is associated with greater incidence and severity of obesity-related comorbidities and inadequate postbariatric surgery weight loss. Accordingly, comorbidity resolution is an important measure of surgical outcome in super-obese individuals. We previously reported superior weight loss in super-obesepatients following duodenal switch (DS) compared to Roux-en-Y gastric bypass (RYGB) in a large single institution series. We now report follow-up comparison of comorbidity resolution and correlation with weight loss. METHODS: Data from patients undergoing DS and RYGB between August 2002 and October 2005 were prospectively collected and used to identify super-obesepatients with diabetes, hypertension, dyslipidemia, and gastroesophageal reflux disease (GERD). Ali-Wolfe scoring was used to describe comorbidity severity. Chi-square analysis was used to compare resolution and two-sample t tests used to compare weight loss between patients whose comorbidities resolved and persisted. RESULTS: Three hundred fifty super-obesepatients [DS (n=198), RYGB (n=152)] were identified. Incidence and severity of hypertension, dyslipidemia, and GERD was comparable in both groups while diabetes was less common but more severe in the DS group (24.2% vs. 35.5%, Ali-Wolfe 3.27 vs. 2.94, p<0.05). Diabetes, hypertension, and dyslipidemia resolution was greater at 36 months for DS (diabetes, 100% vs. 60%; hypertension, 68.0% vs. 38.6%; dyslipidemia, 72% vs. 26.3%), while GERD resolution was greater for RYGB (76.9% vs. 48.57%; p<0.05). There were no differences in weight loss between comorbidity "resolvers" and "persisters". CONCLUSIONS: In comparison to RYGB, DS provides superior resolution of diabetes, hypertension, and dyslipidemia in the super-obese independent of weight loss.
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