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. 2018 Mar;28(3):864-868.
doi: 10.1007/s11695-017-3059-x.

Differences in Body Composition in Patients with Obesity 1 Year After Roux-En-Y Gastric Bypass: Successful Vs. Unsuccessful Weight Loss

Verónica Vázquez-Velázquez  1 , Alexandra Rodríguez González  2 , Samuel Ordoñez Ortega  3 , Marcela Rodríguez Flores  4 , Miguel F Herrera  5 , Juan Pablo Pantoja  5 , Mauricio Sierra  5 , Claudia González-Jáuregui Prida  6 , Juan Eduardo García García  4
Affiliations

Differences in Body Composition in Patients with Obesity 1 Year After Roux-En-Y Gastric Bypass: Successful Vs. Unsuccessful Weight Loss

Verónica Vázquez-Velázquez et al. Obes Surg. 2018 Mar.

Abstract

Aim: The aim of this study is to compare the differences in body composition in patients with obesity with successful weight loss (SWL) and unsuccessful (USWL) 1 year after Roux-en-Y gastric bypass (RYGB).

Methods: We included 36 women and 22 men. After stratifying patients according with SWL (defined as ≥ 50% of excess weight loss), fat-free mass (FFM) and fat mass (FM) trajectories were analyzed in each group.

Results: The %FM in SWL women (78%) was lower than USWL (36 vs. 44, p < 0.001). The %FM in SWL men (77%) was lower than USWL (27 vs. 38, p < 0.05). A lower %FM before surgery increased the probability of success (p < 0.05).

Conclusions: SWL patients have a lower %FM, and those with lower pre-surgical %FM are more likely to have SWL 1 year after RYGB.

Keywords: Body composition; Fat mass; Follow-up; Roux-en-Y gastric bypass; Success; Weight loss.

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