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Weight Reduction Percentile Charts: 2-Year Follow-Up Results of Oagb and Rygb Post Bariatric Surgery Publisher Pubmed



Mokhber S1 ; Sheidaei A2 ; Ahmadkaraji S1 ; Setarehdan SA1 ; Abdolhosseini MR1 ; Kabir A1 ; Solaymanidodaran M1 ; Pazoukia A1, 3, 4
Authors
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Authors Affiliations
  1. 1. Minimally Invasive Surgery Research Center, Iran University of Medical Sciences, Rasoule-Akram Hospital, Mansouri St., Niyayesh Ave., Sattarkhan St., Tehran, 1445613113, Iran
  2. 2. Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Poursina St., Ghods Ave., Keshavarz Bld., Tehran, 1417653761, Iran
  3. 3. Center of Excellence for Minimally Invasive Surgery Training, Iran University of Medical Sciences, Tehran, Iran
  4. 4. Center of Excellence of European Branch of International Federation for Surgery of Obesity, Tehran, Iran

Source: Obesity Surgery Published:2023


Abstract

Purpose: Using a single percentile chart provides us with high standards for the evaluation and accurate investigation of sufficient weight loss after bariatric surgery, counseling, and treating patients in an evidence-based way. Creating percentile charts of weight loss for gastric bypass is the aim of this study. Materials and Methods: This retrospective study was based on data from patients who underwent RYGB or OAGB from February 2008 to February 2020. The lambda-mu-sigma (LMS) method was used to estimate the reduction in body mass index (BMI) and six other metrics measured throughout post-operative follow-up. Percentile charts for various metrics have been presented for the first 2 years’ post-surgery. We applied a bootstrap sampling method to evaluate percentile validity. Results: We recruited 2579 and 1943 patients who underwent OAGB (75% female) and RYGB (84% female) and were between the ages of 18 and 70 years. The preoperative BMI of patients in the OAGB group was higher than in the RYGB group. Concerning RYGB weight reduction results, the maximum percentage of excess weight loss (%EWL) occurs 18 months after surgery and is steady at 24 months. Far above 50%, EWL is achieved after 6 months. OAGB weight loss follows the same trend as RYGB; at 6 months, the %EWL values are slightly higher than RYGB. Conclusions: We present the first bariatric weight loss percentile chart for OAGB. It allows evaluation of sufficient and insufficient weight loss at any post-operative point in a visual aspect. Furthermore, it predicts prospective outcomes and guides patient monitoring. Graphical Abstract: [Figure not available: see fulltext.] © 2023, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
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Ali Sheidaei (2)
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