Anemia and Bariatric Surgery: Results of a National French Survey on Administrative Data of 306,298 Consecutive Patients Between 2008 and 2016

  • Laurent Bailly
  • Luigi Schiavo
  • Lionel Sebastianelli
  • Roxane Fabre
  • Christian Pradier
  • Antonio Iannelli
Original Contributions

Abstract

Background

Bariatric surgery (BS) has grown exponentially in France, and long-term anemia due to micronutrient deficiencies has become common.

Objectives

The objective of this study was to assess the long-term risk of anemia after BS and to investigate the factors associated with the occurrence of this complication.

Materials and Methods

Data from the French National Health Service database on patients who had undergone gastric bypass (GB), sleeve gastrectomy (SG), or adjustable gastric banding (AGB), between 2008 and 2016 were extracted. Only patients with a primary intervention were considered.

Results

Data from 306,298 patients (143.733 SG, 79.188 GB, and 36.413 AGB) were analyzed. Overall, 12.930 of them (5.0%) had a diagnosis of anemia due to micronutrient deficiencies as main diagnosis or related diagnosis at time of a hospital stay between 2008 and 2016. In multivariate analysis, GB surgery, female gender, age younger than 52 years, and 25-OH vitamin D deficiency were positively associated with the occurrence of anemia whereas hospital procedural volume was negatively associated. The risk to be diagnosed with anemia after BS was 13.0% after a GB, 5.6% after a SG and 4.0% after an AGB (Log-rank p < 0.0001). The hazard ratio for anemia after GB compared to SG was 2.0 (95% CI 1.9–2.1), adjusted for age and gender.

Conclusion

In France, between 2008 and 2016, 5% of patients had anemia after BS. The risk to develop anemia was 2-fold higher after a GB than after a SG. Young women should be particularly aware of this long-term risk.

Keywords

Bariatric surgery Anemia Sleeve gastrectomy Roux-en-Y gastric bypass Adjustable gastric banding 

Notes

Compliance with Ethical Standards

Conflict of Interest

The authors declare that they have no conflicts of interest.

Informed Consent

Written informed consent was obtained for each individual participant included in the study.

Ethical Approval

All procedures performed in this study were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Declaration of Helsinki and its later amendments.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Département de Santé PubliqueCentre Hospitalier Universitaire de Nice (Public Health Department University Hospital of Nice)NiceFrance
  2. 2.Université Côte d’Azur, LAMHESSNiceFrance
  3. 3.Department of Cardio-Thoracic and Respiratory ScienceUniversity of Campania “Luigi Vanvitelli”NaplesItaly
  4. 4.IX Division of General Surgery, Vascular Surgery, and Applied BiotechnologyNaples University PolyclinicNaplesItaly
  5. 5.Digestive Unit, Archet 2 HospitalUniversity Hospital of NiceNiceFrance
  6. 6.EA CoBTek, University of Nice Sophia-AntipolisNiceFrance
  7. 7.Inserm, U1065, Team 8 “Hepatic Complications of Obesity”NiceFrance
  8. 8.University of Nice Sophia AntipolisNiceFrance

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