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

Alaa Sada, Rolando D. Calderon-Rojas, Thomas Szabo Yamashita, Wendy S. Reidt, Amy E. Glasgow, Michael L. Kendrick, Maria L. Collazo-Clavell, Elizabeth B. Habermann, Travis J. McKenzie, Todd A. Kellogg

Research output: Contribution to journalArticlepeer-review

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.

Original languageEnglish (US)
Pages (from-to)2870-2876
Number of pages7
JournalObesity Surgery
Volume30
Issue number8
DOIs
StatePublished - Aug 1 2020

Keywords

  • Common channel
  • Duodenal switch
  • Roux-en-Y gastric bypass

ASJC Scopus subject areas

  • Surgery
  • Endocrinology, Diabetes and Metabolism
  • Nutrition and Dietetics

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