Cited by 43Bariatric Surgery and OutcomesPharmacology and Obesity TreatmentBody Contouring and Surgery

The DOI matches its Crossref record; 43 of the 43 references it cites were found in a registry or an index.

The mitigating effect of phentermine and topiramate on weight regain after roux-en-Y gastric bypass surgery

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Abstract

Objective: Weight regain (WR) after Roux‐en‐Y gastric bypass surgery (RYGB) starts to occur 2 years after surgery, ultimately affecting at least 25% of patients. A limited number of studies have evaluated the impact of antiobesity medications (AOMs) on this phenomenon. Methods: This study reviewed the electronic medical records of 1,196 patients who underwent RYGB between 2004 and 2015. WR was evaluated by comparing each patient’s weight during subsequent postoperative office visits to nadir weight (lowest weight after RYGB, n = 760), taking into consideration the interval during which WR occurred. Patients who were prescribed AOMs and came to follow‐up visits were classified as adherent users, whereas those who missed their follow‐up visits were considered nonadherent. This study used a linear mixed model, Cox regression, and generalized equation estimator to determine the impact of AOMs on WR trajectory, hazard ratio for time to event, and odds ratio for repeated event occurrence, respectively. Results: Despite the lack of a unified protocol for using AOMs, the three statistical models converged to show that phentermine and topiramate, used individually or in combination, can significantly reduce WR after RYGB. Conclusions: Phentermine and topiramate are effective in mitigating WR after RYGB. Further studies are needed to help ascertain optimal use of AOMs after bariatric surgery.

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Metadata

Authors
Istfan, N. W., Anderson, W. A., Hess, D. T., Yu, L., Carmine, B., & Apovian, C. M.
Affiliations
Boston University (US)
Corresponding author
Istfan, Nawfal W.
Venue
Obesity
Publisher
Wiley
Published
2020-05-22
Volume
28
Issue
6
Pages
1023-1030
ISSN
  • 1930-7381 (ISSN-L)
  • 1930-739X
OpenAlex
W3026912833
Cited by
43
References
43
Citations by year
2026: 5 · 2025: 5 · 2024: 12 · 2023: 7 · 2022: 3 · 2021: 7 · 2020: 3
FWCI
4.57
Type
journal article
Language
en
Open access
Locations
  • Obesity (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Diabetes and Digestive and Kidney Diseases (P30DK046200)
Topics
  • Health Sciences › Medicine › Surgery › Bariatric Surgery and Outcomes
  • Health Sciences › Medicine › Pharmacology (medical) › Pharmacology and Obesity Treatment
  • Health Sciences › Medicine › Surgery › Body Contouring and Surgery
Keywords
weight regain, Roux-en-Y gastric bypass, phentermine, topiramate, anti-obesity drugs, bariatric surgery, medication adherence, weight loss maintenance
MeSH terms
Topiramate, Adult, Female, Humans, Male, Middle Aged, Phentermine, Postoperative Period, Retrospective Studies, Gastric Bypass, Weight Gain, Anti-Obesity Agents

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