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  • Title: Gastric banding for the treatment of type 2 diabetes mellitus in morbidly obese.
    Author: Brancatisano A, Wahlroos S, Matthews S, Brancatisano R.
    Journal: Surg Obes Relat Dis; 2008; 4(3):423-9. PubMed ID: 18226973.
    Abstract:
    BACKGROUND: To assess the efficacy of the Swedish adjustable gastric band in the treatment of type 2 diabetes mellitus (T2DM), impaired glucose tolerance (IGT), and the metabolic syndrome (MS) in the morbidly obese. METHODS: We identified all patients with T2DM, IGT, or the MS at surgery from our database of 905 consecutive patients who had undergone placement of the Swedish adjustable gastric band between January 2001 and April 2007. The patients were followed up by our multidisciplinary team, and their T2DM was managed by their treating primary care physician and/or endocrinologist. RESULTS: A total of 682 patients had >6 months of follow-up. Of these, 78 patients had T2DM, 64 had IGT, and 100 had the MS. At a median follow-up of 12.5 months, patients with T2DM had a mean +/- SD excess weight loss of 38% +/- 15%. This was associated with hemoglobin A1c and fasting blood sugar levels decreasing from 8.0% +/- 1.7% to 6.1% +/- 1.0% (P <.0001) and from 9.6 +/- 3.4 mmol/L to 5.7 +/- 1.5 mmol/L (P <.0001), respectively. Remission and/or improvement in patients with T2DM was judged by the complete cessation and/or reduction in medication and normalization of laboratory values. This occurred in 81% of those taking oral hypoglycemic agents. Of the patients taking a combination of oral hypoglycemic agents and insulin, 43% ceased and/or reduced their oral hypoglycemic agents, and 93% ceased and/or reduced their insulin requirements. Of those on insulin only, 75% ceased and/or reduced their insulin. No patient with IGT developed diabetes or progressed to require medications. Remission and/or improvement in the MS occurred in 88% of patients. Remission of T2DM was dependent on both the magnitude of excess weight loss (P = .008) and the duration of the pre-existing T2DM. Using binary logistic regression analysis, a duration of T2DM of <5 years before surgery was 6.5 times more likely to lead to resolution of T2DM after the weight loss (P = .004). CONCLUSION: Weight loss after Swedish adjustable gastric band placement is an effective treatment of T2DM in morbidly obese patients, with early intervention offering the greatest chance of remission. It might even prevent the occurrence of T2DM in patients with IGT.
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