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Surgical Endoscopy

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01-02-2018

The impact of bariatric surgery on insulin-treated type 2 diabetes patients

Authors: Rodrigo Lemus, Dror Karni, Dennis Hong, Scott Gmora, Ruth Breau, Mehran Anvari

Published in: Surgical Endoscopy | Issue 2/2018

Abstract

Introduction

Bariatric surgery has been shown to lead to significant improvement in glucose homeostasis, resulting in greater rates of type 2 diabetes mellitus (T2DM) remission. While there is substantial evidence of the benefits of bariatric/metabolic surgery in obese diabetic patients on oral therapy (O-T2D), more evidence is necessary in the case of insulin-treated type 2 diabetes (I-T2D) patients and the selection of surgical procedure.

Methods

Analysis of the Ontario Bariatric Registry data was performed, comparing outcomes of Roux-en-Y-gastric bypass (RYGB) and sleeve gastrectomy (SG) on insulin-treated versus non-insulin-treated T2DM patients. We compared weight loss, medication use and remission rates during a 3-year follow up.

Results

A total of 3668 diabetic Bariatric Registry patients underwent surgery from Jan 2010 to Feb 2017, across 7 Bariatric Centers of Excellence in Ontario. Of these 2872 were O-T2D and 1187 were I-T2D. Weight loss was similar between the two groups at 3 years; with mean %WL of 30.1% for the insulin group vs. 28.3% non-insulin (p = 0.0673). At 3 years, 11.3% of the non-insulin and 59.6% of the insulin-dependent group were using anti-diabetic medication (p < 0.0001). Among insulin-dependent patients, RYGB showed greater reduction in insulin use with 26.5 and 40% compared to SG at 3 years. O-T2D patients experienced more complete diabetes remission, with 66.5 vs. 18.5% (p < 0.0001) at 3 years. Complete remission for I-T2D patients was higher in the RYGB group than SG (p < 0.0001) at years 1 and 2 (8.5 vs. 5.4% and 24.4 vs. 21.1%). The same trend was found regardless of insulin use; complete remission higher for RYGB at 1 and 2 years [50.7 vs. 39.8% (p < 0.0001), and 54.6 vs. 49.1% (p < 0.0001)].

Conclusion

While both RYGB and SG procedures provide effective treatment for I-T2D patients in terms of weight loss and diabetes, incidence of complete remission for insulin-dependent patients is higher with RYGB in earlier years.

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Title: The impact of bariatric surgery on insulin-treated type 2 diabetes patients
Authors: Rodrigo Lemus
Dror Karni
Dennis Hong
Scott Gmora
Ruth Breau
Mehran Anvari
Publication date: 01-02-2018
Publisher: Springer US
Published in: Surgical Endoscopy / Issue 2/2018
Print ISSN: 0930-2794
Electronic ISSN: 1432-2218
DOI: https://doi.org/10.1007/s00464-017-5777-5

At a glance: The STEP trials

Springer Medicine

The impact of bariatric surgery on insulin-treated type 2 diabetes patients

Abstract

Introduction

Methods

Results

Conclusion

At a glance: The STEP trials

Springer Medicine

Abstract

Introduction

Methods

Results

Conclusion

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