scholarly journals The Effect of Preoperative Weight Loss before Gastric Bypass: A Systematic Review

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Deepak K. Kadeli ◽  
John P. Sczepaniak ◽  
Kavita Kumar ◽  
Christie Youssef ◽  
Arash Mahdavi ◽  
...  
Keyword(s):  
Systematic Review ◽  
Weight Loss ◽  
Gastric Bypass ◽  
Meta Analysis ◽  
Insurance Companies ◽  
Preoperative Weight Loss ◽  
Obese Patients ◽  
Class B ◽  
Preoperative Weight ◽  
One Year

Background. Many insurance companies require obese patients to lose weight prior to gastric bypass. From a previous study by the same authors, preoperative weight at surgery is strongly predictive of weight loss up to one year after surgery. This review aims to determine whether preoperative weight loss is also correlated with weight loss up to one year after surgery.Methods. Of the 186 results screened using PubMed, 12 studies were identified. A meta-analysis was performed to further classify studies (A class, B class, regression, and rejected).Results. Of all 12 studies, one met the criteria for A class, six were B class, four were regression, and one was rejected. Six studies supported our hypothesis, five were inconclusive, and no study refuted.Conclusions. Preoperative weight loss is additive to postsurgery weight loss as predicted from the weight at the time of surgery.

Commercial Very Low Energy Meal Replacements for Preoperative Weight Loss in Obese Patients: a Systematic Review

2016 ◽  
Vol 26 (6) ◽  
pp. 1343-1351 ◽  
Author(s):  
Lynda J. Ross ◽  
Siobhan Wallin ◽  
Emma J. Osland ◽  
Muhammed Ashraf Memon
Keyword(s):  
Systematic Review ◽  
Weight Loss ◽  
Low Energy ◽  
Preoperative Weight Loss ◽  
Obese Patients ◽  
Preoperative Weight ◽  
Meal Replacements

Preoperative Weight Loss in Gastric Bypass

2020 ◽  
pp. 47-52
Author(s):  
Gustavo Peixoto Soares Miguel ◽  
Paulo Henrique Oliveira de Souza ◽  
Luize Giuri Palaoro ◽  
Caroline Gravel ◽  
Kassio Covre
Keyword(s):  
Weight Loss ◽  
Gastric Bypass ◽  
Preoperative Weight Loss ◽  
Preoperative Weight

scholarly journals Meta‐analysis of the influence of lifestyle changes for preoperative weight loss on surgical outcomes

2018 ◽  
Vol 106 (3) ◽  
pp. 181-189 ◽  
Author(s):  
M. Roman ◽  
A. Monaghan ◽  
G. F. Serraino ◽  
D. Miller ◽  
S. Pathak ◽  
...  
Keyword(s):  
Weight Loss ◽  
Surgical Outcomes ◽  
Meta Analysis ◽  
Lifestyle Changes ◽  
Preoperative Weight Loss ◽  
Preoperative Weight

scholarly journals Preoperative weight loss in super-obese patients: study of the rate of weight loss and its effects on surgical morbidity

Clinics ◽  
2014 ◽  
Vol 69 (12) ◽  
pp. 828-834 ◽  
Author(s):  
MA Santo ◽  
D Riccioppo ◽  
D Pajecki ◽  
R de Cleva ◽  
F Kawamoto ◽  
...  
Keyword(s):  
Weight Loss ◽  
Preoperative Weight Loss ◽  
Obese Patients ◽  
Surgical Morbidity ◽  
Super Obese ◽  
Preoperative Weight

scholarly journals Association of Circulating Irisin Concentrations with Weight Loss after Roux-en-Y Gastric Bypass Surgery

2019 ◽  
Vol 16 (4) ◽  
pp. 660 ◽  
Author(s):  
Yeon Lee ◽  
Yoonseok Heo ◽  
Ji-Ho Choi ◽  
Sunghyouk Park ◽  
Kyoung Kim ◽  
...  
Keyword(s):  
Bariatric Surgery ◽  
Weight Loss ◽  
Gastric Bypass ◽  
Bypass Surgery ◽  
Excess Weight Loss ◽  
Gastric Bypass Surgery ◽  
Morbidly Obese ◽  
Obese Patients ◽  
Preoperative Serum ◽  
One Year

Irisin is a myokine with potential anti-obesity properties that has been suggested to increase energy expenditure in obese patients. However, there is limited clinical information on the biology of irisin in humans, especially in morbidly obese patients undergoing bariatric surgery. We aimed to assess the association of circulating irisin concentrations with weight loss in obese patients undergoing bariatric surgery. This was a pilot, single-centre, longitudinal observational study. We recruited 25 morbidly obese subjects who underwent Roux-en-Y gastric bypass surgery (RYGBP), and blood samples from 12 patients were taken to measure serum irisin concentrations before, and one and nine months after surgery. Their clinical characteristics were measured for one year. The preoperative serum irisin concentration (mean 1.01 ± 0.23 μg/mL, range 0.73–1.49) changed bidirectionally one month after RYGBP. The mean concentration at nine months was 1.11 ± 0.15 μg/mL (range 0.92–1.35). Eight patients had elevated irisin levels compared with their preoperative values, but four did not. Elevations of irisin levels nine months, but not one month, after surgery, were associated with lower preoperative levels (p = 0.016) and worse weight reduction rates (p = 0.006 for the percentage excess weight loss and p = 0.032 for changes in body mass index). The preoperative serum irisin concentrations were significantly correlated with the percentage of excess weight loss for one year (R2 = 0.612; p = 0.04) in our study. Our results suggest that preoperative circulating irisin concentrations may be at least in part associated with a weight loss effect of bariatric surgery in morbidly obese patients. Further large-scale clinical studies are needed to ratify these findings.

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