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  • Title: Guiding Patients Toward the Appropriate Surgical Treatment for Obesity: Should Presurgery Psychological Correlates Influence Choice Between Roux-en-Y Gastric Bypass and Vertical Sleeve Gastrectomy?
    Author: Ames GE, Heckman MG, Diehl NN, Shepherd DM, Holgerson AA, Grothe KB, Kellogg TA, Bowers SP, Clark MM.
    Journal: Obes Surg; 2017 Oct; 27(10):2759-2767. PubMed ID: 28815388.
    Abstract:
    BACKGROUND: Helping patients determine which type of bariatric surgery, Roux-en-Y gastric bypass (RYGB) or vertical sleeve gastrectomy (VSG), may be the best treatment can be challenging. This study investigated psychological correlates and their influence on weight loss for patients who underwent RYGB or VSG. METHODS: Four hundred twenty-two patients (RYGB = 305; VSG = 117) completed screening questionnaires presurgery and underwent surgery between August 2012 and April 2015. Associations between demographics and questionnaires with percentage weight change were evaluated using multivariable linear regression models. RESULTS: Median age was 48 years and median BMI 45.3 kg/m2 presurgery. Median percentage changes in weight from baseline to years 1 and 2 follow-up were - 31.5% (range - 52.2 to - 9.2%) and - 31.2% (range - 50.0 to - 1.2%) for RYGB and 25.3% (range - 49.8 to - 4.7%) and - 23.3% (range - 58.9 to - 1.6%) for VSG, respectively. Linear regression models revealed that younger patients lost more weight than older patients at years 1 (RYGB p < 0.0001; VSG p = 0.0001) and 2 (RYGB p = 0.005; VSG p = 0.002). No psychological correlates were significantly associated with weight loss outcomes. Post hoc analyses comparing patients who had surgery to those in the same cohort who did not have surgery revealed significantly higher rates of depression (p < 0.001), anxiety (p < 0.001), binge eating (p = 0.003), night eating (p < 0.001), food addiction (p = 0.042), and lower self-efficacy (p < 0.001) among patients who did not have surgery. DISCUSSION: Patients who are psychologically higher functioning are more likely to complete the evaluation process and undergo bariatric surgery. For patients who had surgery, psychological correlates were not associated with weight loss outcome for either RYGB or VSG. Implications for surgical choice are discussed.
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