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  • Title: Bariatric surgery for morbid obesity.
    Author: Monteforte MJ, Turkelson CM.
    Journal: Obes Surg; 2000 Oct; 10(5):391-401. PubMed ID: 11054242.
    Abstract:
    BACKGROUND: Bariatric surgery is a treatment for severely obese patients. We examined the efficacy of bariatric surgery, addressing three questions: 1) What is the overall weight reduction following bariatric surgery? 2) What complications are associated with bariatric surgery? 3) What impact does weight loss have on obesity-related comorbidity? METHODS: Fixed and random effects meta-analyses were used to determine the amount of weight reduction following bariatric surgery. The influence of a variety of co-variates that could affect study results was examined. Information from evidence-based sources was used to explore the impact of weight loss on comorbidities. RESULTS: Meta-analyses results were affected by loss to follow-up, and within-study heterogeneity of variance. Therefore, results were pooled from studies with complete patient follow-up. Meta-analysis of six studies reporting weight loss at 1 year and four studies with mean follow-up of 9 months to 7 years demonstrated BMI reductions of 16.4 kg/m(2) and 13.3 kg/m(2), respectively. Weight reduction following bariatric surgery may be associated with improvements in risk factors for cardiac disease including hypertension, type 2 diabetes and lipid abnormalities, and may decrease the severity of obstructive sleep apnea. CONCLUSION: Bariatric surgery is appropriate for obese patients (BMI >40 kg/m(2) or > or =35 kg/m(2) with obesity-related comorbidity) in whom non-surgical treatment options were unsuccessful. Additional research is needed to examine the long-term benefits of weight loss following bariatric surgery, particularly with respect to obesity-related comorbidities.
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