IFSO Worldwide Survey 2020-2021: Current Trends for Bariatric and Metabolic Procedures

Overview

Journal Obes Surg

Date 2024 Mar 4

PMID 38438667

Authors

Luigi Angrisani

Antonella Santonicola

Paola Iovino

Rossella Palma

Lilian Kow

Gerhard Prager

Almino Ramos

Scott Shikora

Affiliations

Soon will be listed here.

Abstract

Purpose: This IFSO survey aims to describe the current trends of metabolic and bariatric surgery (MBS) reporting on the number and types of surgical and endoluminal procedures performed in 2020 and 2021, in the world and within each IFSO chapter.

Methods: All national societies belonging to IFSO were asked to complete the survey form. The number and types of procedures performed (surgical and endoluminal interventions) from 2020 to 2021 were documented. A special section focused on the impact of COVID-19, the existence of national protocols for MBS, the use of telemedicine, and any mortality related to MBS. A trend analysis of the data, both worldwide and within each IFSO chapter, was also performed for the period between 2018 and 2021.

Results: Fifty-seven of the 74 (77%) IFSO national societies submitted the survey. Twenty-four of the 57 (42.1%) reported data from their national registries. The total number of surgical and endoluminal procedures performed in 2020 was 507,806 and in 2021 was 598,834. Sleeve gastrectomy (SG) remained the most performed bariatric procedure. Thirty national societies (52%) had regional protocols for MBS during COVID-19, 61.4% supported the use of telemedicine, and only 47.3% collected data on mortality after MBS in 2020. These percentages did not significantly change in 2021 (p > 0.05).

Conclusions: The number of MBS markedly decreased worldwide during 2020. Although there was a positive trend in 2021, it did not reach the values obtained before the COVID-19 pandemic. SG continued to be the most performed operation. Adjustable gastric banding (AGB) continues to decrease worldwide.

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References

Yang W, Wang C, Shikora S, Kow L . Recommendations for Metabolic and Bariatric Surgery During the COVID-19 Pandemic from IFSO. Obes Surg. 2020; 30(6):2071-2073. PMC: 7155392. DOI: 10.1007/s11695-020-04578-1. View

Angrisani L . 2014: The Year of the Sleeve Supremacy. Obes Surg. 2017; 27(6):1626-1627. DOI: 10.1007/s11695-017-2681-y. View

Singhal R, Ludwig C, Rudge G, Gkoutos G, Tahrani A, Mahawar K . 30-Day Morbidity and Mortality of Bariatric Surgery During the COVID-19 Pandemic: a Multinational Cohort Study of 7704 Patients from 42 Countries. Obes Surg. 2021; 31(10):4272-4288. PMC: 8323543. DOI: 10.1007/s11695-021-05493-9. View

Welbourn R, Hollyman M, Kinsman R, Dixon J, Liem R, Ottosson J . Bariatric Surgery Worldwide: Baseline Demographic Description and One-Year Outcomes from the Fourth IFSO Global Registry Report 2018. Obes Surg. 2018; 29(3):782-795. DOI: 10.1007/s11695-018-3593-1. View

Angrisani L, Santonicola A, Iovino P, Vitiello A, Zundel N, Buchwald H . Bariatric Surgery and Endoluminal Procedures: IFSO Worldwide Survey 2014. Obes Surg. 2017; 27(9):2279-2289. PMC: 5562777. DOI: 10.1007/s11695-017-2666-x. View

Angrisani L, Santonicola A, Iovino P, Vitiello A, Higa K, Himpens J . IFSO Worldwide Survey 2016: Primary, Endoluminal, and Revisional Procedures. Obes Surg. 2018; 28(12):3783-3794. DOI: 10.1007/s11695-018-3450-2. View

Angrisani L, Santonicola A, Iovino P, Formisano G, Buchwald H, Scopinaro N . Bariatric Surgery Worldwide 2013. Obes Surg. 2015; 25(10):1822-32. DOI: 10.1007/s11695-015-1657-z. View

Scopinaro N . The IFSO and obesity surgery throughout the world. International Federation for the Surgery of Obesity. Obes Surg. 1998; 8(1):3-8. DOI: 10.1381/096089298765554971. View

Buchwald H, Oien D . Metabolic/bariatric surgery worldwide 2011. Obes Surg. 2013; 23(4):427-36. DOI: 10.1007/s11695-012-0864-0. View

10.

Angrisani L, Santonicola A, Iovino P, Ramos A, Shikora S, Kow L . Bariatric Surgery Survey 2018: Similarities and Disparities Among the 5 IFSO Chapters. Obes Surg. 2021; 31(5):1937-1948. PMC: 7800839. DOI: 10.1007/s11695-020-05207-7. View

11.

Angrisani L, Santonicola A, Iovino P, Vitiello A, Zundel N, Buchwald H . Erratum to: Bariatric Surgery and Endoluminal Procedures: IFSO Worldwide Survey 2014. Obes Surg. 2017; 27(9):2290-2292. PMC: 6829693. DOI: 10.1007/s11695-017-2773-8. View

12.

Ohta M, Ahn S, Seki Y, Yang W, Wong S, Udomsawaengsup S . Ten Years of Change in Bariatric/Metabolic Surgery in the Asia-Pacific Region with COVID-19 Pandemic: IFSO-APC National Reports 2021. Obes Surg. 2022; 32(9):2994-3004. PMC: 9245878. DOI: 10.1007/s11695-022-06182-x. View