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OBJECTIVE To investigate weight trajectories among patients with severe obesity undergoing sleeve gastrectomy (SG), Roux-en-Y gastric bypass (RYGB), and nonsurgical treatment. BACKGROUND Although bariatric procedures are associated with substantial weight loss, few studies have compared surgical outcomes to nonsurgical treatment, particularly for SG. METHODS In this retrospective, matched cohort study, adult patients with body mass index ≥35 kg/m who underwent RYGB or SG procedures from January 2005 through September 2015 were matched to 87,965 nonsurgical patients. Hierarchical linear models were used to investigate percent total weight loss (%TWL) and regain at 5 years among RYGB, SG, and nonsurgical patients, and at 10 years for RYGB and nonsurgical patients. RESULTS Among 13,900 SG, 17,258 RYGB, and 87,965 nonsurgical patients, the 5-year follow-up rate was 70.9%, 72.0%, and 64.5%, respectively. At 1 year, RYGB patients had 28.4%TWL (95% confidence interval 28.2, 28.5), SG 23.0%TWL (22.8, 23.2), and nonsurgical patients 0.2%TWL (0.1, 0.4). At 5 years, RYGB had 21.7%TWL (21.5, 22.0), SG 16.0%TWL (15.4, 16.6), and nonsurgical patients 2.2%TWL (2.0, 2.5). After 5 years, 3.7% of RYGB and 10.1% of SG patients had regained weight to within 5% of baseline. At 10 years, RYGB patients had 20.2%TWL (19.3, 21.0) and nonsurgical patients 4.8%TWL (4.0, 5.5). CONCLUSIONS In this study, patients with severe obesity who underwent SG and RYGB lost significantly more weight at 5 years than nonsurgical patients. Weight regain was common after surgery but regain to within 5% of baseline was rare.OBJECTIVE To compare long-term outcomes between robotic and LG approaches using propensity score weighting based on a generalized boosted method to control for selection bias. SUMMARY OF BACKGROUND DATA Minimally invasive surgical approaches for GC are increasing, yet limited evidence exists for long-term outcomes of robotic gastrectomy (RG). METHODS Patients (n = 2084) with GC stages I-III who underwent LG or RG between 2009 and 2017 were analyzed. https://www.selleckchem.com/products/bay80-6946.html Generalized boosted method was used to estimate a propensity score derived from all available preoperative characteristics. Long-term outcomes were compared using the adjusted Kaplan-Meier method and the weighted Cox proportional hazards regression model. RESULTS After propensity score weighting, the population was balanced. Patients who underwent RG showed reduced blood loss (16 mL less, P = 0.025), sufficient lymph node harvest from the initial period, and no changes in surgical outcomes over time. With 52-month median follow-up, no difference was noted in 5-year overall survival in unweighted [91.5% in LG vs 94% in RG; hazard ratio (HR), 0.71; 95% confidence interval (CI), 0.46-1.1; P = 0.126] and weighted populations (94.2% in LG vs 93.2% in RG; HR, 0.88; 95% CI, 0.52-1.48; P = 0.636). There were no differences in 5-year recurrence-free survival (RFS), with unweighted 5-year RFS of 95.4% for LG and 95.2% for RG (HR, 0.95; 95% CI, 0.55-1.64; P = 0.845) and weighted 5-year RFS of 96.3% for LG and 95.3% for RG (HR, 1.24; 95% CI, 0.66-2.33; P = 0.498). CONCLUSIONS After balancing covariates, RG demonstrated reliable surgical outcomes from the beginning. Long-term survival after RG and LG for GC was similar.OBJECTIVE To identify clinical and histopathological risk factors of LNM in T1 CRC. SUMMARY OF BACKGROUND DATA The requisite of additional surgery after locally resected T1 CRC is dependent on the risk of LNM. Depth of submucosal invasion is used as a key predictor of lymphatic metastases although data are conflicting on its actual impact. METHODS Retrospective population-based cohort study on prospectively collected data on all patients with T1 CRC undergoing surgical resection in Sweden, 2009-2017 and Denmark 2016-2018. The Danish cohort was used for validation. Potential risk factors of LNM investigated were; age, sex, tumor location, submucosal invasion, grade of differentiation, mucinous subtype, lymphovascular, and perineural invasion. RESULTS One hundred fifty out of the 1439 included patients (10%) had LNM. LVI (P less then 0.001), perineural invasion (P less then 0.001), mucinous subtype (P = 0.006), and age less then 60 years (P less then 0.001) were identified as independent risk factors whereas deep submucosal invasion was only a dependent (P = 0.025) risk factor and not significant in multivariate analysis (P = 0.075). The incidence of LNM was 51/882 (6%) in absence of the independent risk factors. The Danish validation cohort, confirmed our findings regarding the role of submucosal invasion, LVI, and age. CONCLUSIONS This is a large study on LNM in T1 CRC, including validation, showing that LVI and perineural invasion, mucinous subtype, and low age constitute independent risk factors, whereas depth of submucosal invasion is not an independent risk factor of LNM. Thus, our findings provide a useful basis for management of patients after local excision of early CRC.OBJECTIVE To assess the association between preoperative opioid exposure and readmissions following common surgery. SUMMARY BACKGROUND DATA Preoperative opioid use is common, but its effect on opioid-related, pain-related, respiratory-related, and all-cause readmissions following surgery is unknown. METHODS We analyzed claims data from a 20% national Medicare sample of patients ages ≥ 65 with Medicare Part D claims undergoing surgery between January 1, 2009 and November 30, 2016. We grouped patients by the dose, duration, recency, and continuity of preoperative opioid prescription fills. We used logistic regression to examine the association between prior opioid exposure and 30-day readmissions, adjusted for patient risk factors and procedure type. RESULTS Of 373,991 patients, 168,579 (45%) filled a preoperative opioid prescription within 12 months of surgery, ranging from minimal to chronic high use. Preoperative opioid exposure was associated with higher rate of opioid-related readmissions, compared with naive patients [low aOR=1.63, 95% CI=1.26-2.12; high aOR=3.70, 95% CI=2.71-5.04]. Preoperative opioid exposure was also associated with higher risk of pain-related readmissions [low aOR=1.27, 95% CI=1.23-1.32; high aOR=1.62, 95% CI=1.53-1.71] and respiratory-related readmissions [low aOR=1.10, 95% CI=1.05-1.16; high aOR=1.44, 95% CI=1.34-1.55]. Low, moderate, and high chronic preoperative opioid exposures were predictive of all-cause readmissions (low OR 1.09, 95% CI 1.06-1.12); high OR 1.23, 95% CI 1.18-1.29). CONCLUSIONS Higher levels of preoperative opioid exposure are associated with increased risk of readmissions after surgery. These findings emphasize the importance of screening patients for preoperative opioid exposure and creating risk mitigation strategies for patients.
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