Outcomes of Duodenal Switch with a Moderate Common Channel Length and Roux-en-y Gastric Bypass: Does One Pose More Risk?

Published on Aug 1, 2020in Obesity Surgery3.412
· DOI :10.1007/S11695-020-04619-9
Alaa Sada5
Estimated H-index: 5
(Mayo Clinic),
Rolando Calderon-Rojas2
Estimated H-index: 2
(Mayo Clinic)
+ 7 AuthorsTodd A. Kellogg26
Estimated H-index: 26
(Mayo Clinic)
Sources
Abstract
BACKGROUND: Traditional duodenal switch (DS) typically leaves a short common channel and is infrequently performed in part due to increased risk of malnutrition. We compared nutritional deficiencies between DS with a moderate channel length and standard proximal Roux-en-Y gastric bypass (RYGB). METHODS: We conducted a retrospective review of 61 matched pairs who underwent DS or RYGB using our institutional database; patients were matched on sex, age, race, and BMI. DS was performed with a common channel length between 120 and 150 cm. Thirty-day complications, total body weight loss (TBWL) %, and nutritional labs up to 24 months were compared using paired t test and Wilcoxon rank sum tests. RESULTS: Weight loss was similar at each time point (all p > 0.1). DS patients had lower vitamin D levels at 6 months, lower calcium levels at 6 and 12 months, and lower hemoglobin at 12 months and otherwise equivalent (all p < 0.05). Revision was rare (1 DS; 0 RYGB). There were no differences in short-term complications (p = 0.28). CONCLUSION: DS with a moderate common channel length is safe with a low revision rate. Weight loss and nutritional outcomes appear to be comparable to RYGB, and it may be considered an effective RYGB alternative.
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