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Background Reports of long-term (> 5–15-year) outcomes assessing the safety and efficacy of primary revisional laparoscopic sleeve gastrectomy (LSG) are few. Methods Retrospective long-term comparisons of primary (pLSG) and revisional (rLSG) procedures were matched for gender, age ± 5 years, and body mass index (BMI) ± 5 kg/m 2 . Weight loss, associated medical condition status, and patient satisfaction were evaluated. Results Between May 1, 2006, and December 31, 2016, 194 matched patients with severe obesity (mean BMI 44.1 ± 6.7 kg/m 2 ; age 44.2 ± 10.0 years, 67.0% female) underwent pLSG ( n = 97) or rLSG ( n = 97) and were followed for a mean 12.1 ± 1.5 vs 7.6 ± 2.1 years. Respective mean weight regain from nadir was 15.0 ± 14.4 kg vs 11.9 ± 12.2 kg. Respective percent mean total weight loss and excess weight loss were 20.9 ± 12.7% and 51.8 ± 33.1%, and 18.3 ± 12.8% and 43.4 ± 31.6% at last follow-up, with no significant difference between groups. Resolution of type 2 diabetes (HbA1 C < 6.5%, off medications) was 23.1% vs 11.1%; hypertension 36.0% vs 16.0%; and hyperlipidemia 37.1% vs 35.3%. Patients in the pLSG group were significantly more satisfied with LSG (59.8% vs 43.3%, p < 0.05) and more likely to choose the procedure again. Conclusions There were no significant differences in long-term weight loss or associated medical condition outcomes in matched pLSG and rLSG patients. Graphical Abstract

Background Long-term laparoscopic sleeve gastrectomy (LSG) outcomes in patients with obesity are scarce. We aimed to examine the outcomes and subjective experience of patients who underwent primary LSG with long-term follow-up. Methods The study is a retrospective observational analysis of patients who underwent primary LSG in a single center with 5–15 years of follow-up. Patients’ hospital chart data supplemented by a detailed follow-up online questionnaire and telephone interview were evaluated. Results The study sample included 578 patients (67.0% female) with 8.8 ± 2.5 years of mean follow-up, with a response rate to the survey of 82.8%. Mean baseline age and body mass index (BMI) were 41.9 ± 10.6 years and 42.5 ± 5.5 kg/m 2 , respectively. BMI at nadir was 27.5 ± 4.9 kg/m 2 , corresponding to a mean excess weight loss (EWL) of 86.9 ± 22.8%. Proportion of patients with weight regain, defined as nadir ≥ 50.0% EWL, but at follow-up < 50.0% EWL, was 34.6% ( n = 200) and the mean weight regain from nadir was 13.3 ± 11.1 kg. BMI and EWL at follow-up were 32.6 ± 6.4 kg/m 2 and 58.9 ± 30.1%, respectively. The main reasons for weight regain given by patients included “not following guidelines,” “lack of exercise,” “subjective impression of being able to ingest larger quantities of food in a meal,” and “not meeting with the dietitian.” Resolution of obesity-related conditions at follow-up was reported for hypertension (51.7%), dyslipidemia (58.1%) and type 2 diabetes (72.2%). The majority of patients (62.3%) reported satisfaction with LSG. Conclusions In the long term, primary LSG was associated with satisfactory weight and health outcomes. However, weight regain was notable. Graphical Abstract

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