Evaluate the Effects of Different Types of Preoperative Restricted Calorie Diets on Weight, Body Mass Index, Operation Time and Hospital Stay in Patients Undergoing Bariatric Surgery: A Systematic Review and Meta Analysis Study Publisher Pubmed



Khalooeifard R¹ ; Rahmani J² ; Ghoreishy SM³ ; Tavakoli A⁴ ; Najjari K⁵ ; Talebpour M⁵ Show Affiliations
Source: Obesity Surgery Published:2024

Abstract

Previous studies investigated low-calorie diets (LCD), very-low-calorie diets (VLCD), and very-low-calorie ketogenic diets (VLCKD) in relation to weight loss and outcomes for bariatric surgery patients. However, the overall effects of these diets on various outcomes remain unclear. This study aimed to assess the impact of preoperative restricted calorie diets on weight, body mass index (BMI), operation time (OT), and hospital stay (HS) in bariatric surgery patients. Seventeen articles were analyzed, revealing the highest weight loss (-8.62) and BMI reduction (-5.75) with VLCKD. Due to insufficient data, the impact of these diets on OT and HS could not be determined. Further interventional studies are required to determine the ideal preoperative diet that achieves optimal weight loss, patient compliance, tolerance, acceptance, and surgical outcomes. © 2023, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.