Roux-en-Y Gastric Bypass Versus Sleeve Gastrectomy for Super Super Obese and Super Obese: Systematic Review and Meta-analysis of Weight Results, Comorbidity Resolution

  • Yong Wang
  • Ying-han Song
  • Jing Chen
  • Rui Zhao
  • Lin Xia
  • Ya-ping Cui
  • Zhi-yong Rao
  • Yong Zhou
  • Xiao-ting WuEmail author
Review Article



Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG) used for super obesity (SO) and super super obesity (SSO) remain controversial. The meta-analysis was to summarize the evidence.


We searched in MEDLINE and PubMed for studies concerning RYGB and SG for SO or SSO and pooled complication, percentage excess weight loss (%EWL), and resolution of comorbidities.


Twelve studies were identified. RYGB achieved higher %EWL at 12 months, but no significant difference at 24 months. Resolution of diabetes mellitus and dyslipidemia reached a statistical significance; however, there was no significant difference in hypertension.


RYGB was superior in %EWL for SSO and SO at 12 months. However, regarding at 24 months, RYGB was equal to SG, which is from a meta-analysis and cannot be seen as a definitive conclusion.


Roux-en-Y gastric bypass Sleeve gastrectomy Super super obesity Super obesity 


Compliance with Ethical Standards

Conflict of Interest

All the authors declare that they have no conflict of interest.

Ethical Approval Statement

For this type of study formal consent is not required.

Informed Consent Statement

Does not apply.


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Yong Wang
    • 1
  • Ying-han Song
    • 2
  • Jing Chen
    • 3
  • Rui Zhao
    • 1
  • Lin Xia
    • 1
  • Ya-ping Cui
    • 1
  • Zhi-yong Rao
    • 4
  • Yong Zhou
    • 1
  • Xiao-ting Wu
    • 1
    Email author
  1. 1.Department of Gastrointestinal Surgery, West China HospitalSichuan UniversityChengduChina
  2. 2.Department of Day Surgery Centre, West China HospitalSichuan UniversityChengduChina
  3. 3.Healthcare-associated infection control centerSichuan Academy of Medical Science and Sichuan Provincial People’s HospitalChengduChina
  4. 4.Department of Clinical Nutrition, West China HospitalSichuan UniversityChengduChina

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