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  • Title: Laparoscopic Sleeve Gastrectomy Is Associated with Lower 30-Day Morbidity Versus Laparoscopic Gastric Bypass: an Analysis of the American College of Surgeons NSQIP.
    Author: Guerrier JB, Dietch ZC, Schirmer BD, Hallowell PT.
    Journal: Obes Surg; 2018 Nov; 28(11):3567-3572. PubMed ID: 30014238.
    Abstract:
    PURPOSE: Laparoscopic sleeve gastrectomy (LSG) has rapidly gained popularity as a single-stage operation for the treatment of morbid obesity, as patients undergoing LSG have been shown to achieve similar weight loss and resolution of obesity-related comorbidities in comparison to those undergoing Roux-en-Y gastric bypass (RYGB), the "gold standard" bariatric operation. Although LSG poses fewer technical challenges than RYGB, little is known about differences in short-term outcomes among patients undergoing LSG and RYGB. We hypothesized that LSG is associated with lower 30-day risk-adjusted serious morbidity. METHODS: Preoperative characteristics and 30-day outcomes from the American College of Surgeons National Surgical Quality Improvement Program (ACSNSQIP) Participant Use Files (PUF) 2010-2014 were selected for all patients who underwent LSG or RYGB. Descriptive comparisons were performed using chi-square and Wilcoxon's rank-sum tests as appropriate. The primary outcome was a risk-adjusted composite measure of 30-day serious morbidity and mortality. RESULTS: We analyzed records for 47,982 (42.0%) and 66,380 (58.0%) patients undergoing LSG and RYGB, respectively. On univariate analysis, LSG patients had a lower rate of organ space infection (0.45% vs. 0.68%, p < 0.001), lower rate of bleeding requiring transfusions (1.00% vs. 1.60%, p < 0.001), lower rate of sepsis (0.34% vs. 0.49%, p < 0.001), and septic shock (0.12% vs. 0.22%, p < 0.001) and required fewer unplanned reoperations (1.34% vs. 2.56%, p < 0.001) than RYGB patients. Both groups had similar rates of deep venous thrombosis (0.33% vs. 0.28%, p = 0.15) and pulmonary embolism (0.17% vs. 0.21%, p = 0.15). Mortality was lower among LSG patients (0.09% vs. 0.14%, p = 0.01). On multivariate analysis, RYGB was associated with higher risk-adjusted 30-day serious morbidity than LSG (odds ratio 1.61; 95% CI 1.52-1.71, p < 0.001). Older age, female gender, higher BMI, and insulin-dependent diabetes were also associated with risk of serious morbidity (C-statistic = 0.60). CONCLUSION: Serious morbidity following bariatric surgery is uncommon; however, LSG may be associated with modest protection from adverse 30-day outcomes in comparison to RYGB. Our conclusion is limited by the difference in baseline risk factors of the populations studied.
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