Carolyn Graham1,2, Noah Switzer3, Artan Reso4, Christopher Armstrong4, Neal Church4, Philip Mitchell4, Estifanos Debru4, Richdeep Gill4. 1. University of Calgary, Calgary, Canada. chgraham@ucalgary.ca. 2. General Surgery Residency Program, Department of Surgery, University of Calgary, 1023 North Tower, 1403 29 Street NW, Calgary, AB, T2N 2T9, Canada. chgraham@ucalgary.ca. 3. University of Alberta, Edmonton, Canada. 4. University of Calgary, Calgary, Canada.
Abstract
INTRODUCTION: Bariatric surgery has been shown to be a safe and durable intervention for patients struggling with obesity and metabolic syndrome, including hypertension. Buchwald et al. reported hypertension resolution rates in 67.1% and improvement in 78.5% following aggregate bariatric surgery. The laparoscopic sleeve gastrectomy (LSG) is becoming increasingly utilized as a primary bariatric surgery, but lacks long-term outcome data. There are a growing number of studies reporting outcome data beyond 5 years. OBJECTIVE: This study aims to systematically evaluate the efficacy of laparoscopic sleeve gastrectomy on hypertension amongst obese patients. MATERIALS AND METHODS: A comprehensive literature search was conducted through Medline, Embase, Scopus, Web of Science, Dare, Cochrane library, and HTA database. The search terms used were broad: sleeve gastrectomy AND hypertension OR blood pressure. Adult patients undergoing LSG with follow-up hypertension outcome results of at least 5 years were included. Revisional surgeries were excluded. Two independent reviewers were used. RESULTS: Fourteen studies were included in this systematic review, which included 3550 subjects in total. Mean age was 41.1 ± 10.7 years. Mean pre-operative BMI and weight were 47.7 ± 8.83 kg/m2 and 272.8 ± 48.4 lb, respectively. Pre-operative prevalence of hypertension was 36.5% (range 6.7-91%) which dropped to 14.79% (range 0-33.3%) at approximately 5-year follow-up. Hypertension resolved in 62.17% (range 0-100%) of patients and improved in 35.7% (range 13.3-76.9%) at a mean of 5.35 years of follow-up. CONCLUSION: From this systematic review, LSG is an effective intervention for bariatric patients with hypertension. In addition to the observed reduction in the incidence of hypertension, it is likely that LSG may lead to additional health system benefits such as cost savings due to reductions in antihypertensive medications. Further prospective studies should include estimates of cost savings associated with reductions in chronic antihypertensive medication usage.
INTRODUCTION: Bariatric surgery has been shown to be a safe and durable intervention for patients struggling with obesity and metabolic syndrome, including hypertension. Buchwald et al. reported hypertension resolution rates in 67.1% and improvement in 78.5% following aggregate bariatric surgery. The laparoscopic sleeve gastrectomy (LSG) is becoming increasingly utilized as a primary bariatric surgery, but lacks long-term outcome data. There are a growing number of studies reporting outcome data beyond 5 years. OBJECTIVE: This study aims to systematically evaluate the efficacy of laparoscopic sleeve gastrectomy on hypertension amongst obesepatients. MATERIALS AND METHODS: A comprehensive literature search was conducted through Medline, Embase, Scopus, Web of Science, Dare, Cochrane library, and HTA database. The search terms used were broad: sleeve gastrectomy AND hypertension OR blood pressure. Adult patients undergoing LSG with follow-up hypertension outcome results of at least 5 years were included. Revisional surgeries were excluded. Two independent reviewers were used. RESULTS: Fourteen studies were included in this systematic review, which included 3550 subjects in total. Mean age was 41.1 ± 10.7 years. Mean pre-operative BMI and weight were 47.7 ± 8.83 kg/m2 and 272.8 ± 48.4 lb, respectively. Pre-operative prevalence of hypertension was 36.5% (range 6.7-91%) which dropped to 14.79% (range 0-33.3%) at approximately 5-year follow-up. Hypertension resolved in 62.17% (range 0-100%) of patients and improved in 35.7% (range 13.3-76.9%) at a mean of 5.35 years of follow-up. CONCLUSION: From this systematic review, LSG is an effective intervention for bariatric patients with hypertension. In addition to the observed reduction in the incidence of hypertension, it is likely that LSG may lead to additional health system benefits such as cost savings due to reductions in antihypertensive medications. Further prospective studies should include estimates of cost savings associated with reductions in chronic antihypertensive medication usage.
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