Medium and Long-Term Weight Loss After Revisional Bariatric Surgery: A Systematic Review and Meta-Analysis

• Published in: Obesity surgery Vol. 34; no. 5; pp. 1917 - 1928
• Main Authors: Bastos, Eduardo L. S., Salgado, Wilson, Dantas, Anna C. B., Onzi, Tiago R., Silva, Lyz B., Albano, Álvaro, Tristão, Luca S., dos Santos, Clara L., Silvinato, Antonio, Bernardo, Wanderley M.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01-05-2024; Springer Nature B.V
• Subjects: Body mass index; Evidence-based medicine; Gastrointestinal surgery; Medicine; Medicine & Public Health; Meta-analysis; Metabolism; Obesity; Observational studies; Patients; Review; Software; Surgeons; Surgery; Systematic review; Weight control; Reoperation; Systematic review; Long-term care; Bariatric surgery
• ISSN: 0960-8923; 1708-0428; 1708-0428
• DOI: 10.1007/s11695-024-07206-4

Despite the current increase in revisional bariatric surgery (RBS), data on the sustainability of weight loss remain unclear. A systematic review and meta-analysis were performed to assess weight loss outcomes in adult patients undergoing RBS with follow-up > 2 years. Twenty-eight observational studies (
n
 = 2213 patients) were included. The %TWL was 27.2 (95%CI = 23.7 to 30.6), and there was a drop in BMI of 10.2 kg/m
2
(95%CI =  − 11.6 to − 8.7). The %EWL was 54.8 (95%CI = 47.2 to 62.4) but with a high risk of publication bias (Egger’s test = 0.003). The overall quality of evidence was very low. Our data reinforce that current evidence on RBS is mainly based on low-quality observational studies, and further higher-quality studies are needed to support evidence-based practice.
Graphical Abstract