Natural History of Adjustable Gastric Banding: Lifespan and Revisional Rate: A Nationwide Study on Administrative Data on 53,000 Patients.

OBJECTIVE

The aim of this study was to analyze the adjustable gastric banding (AGB) natural history on a national basis.

BACKGROUND

Adjustable gastric banding represented the most common bariatric procedure in France until 2010. Since then, the number of AGBs has decreased and the rate of band removal and revisional surgeries has progressively increased.

METHODS

For analysis, we included all adult patients operated on with AGB in France between 2007 and 2013. Data were extracted from a national administrative database ("Programme De Médicalisation des Systèmes d'Information," PMSI), which is an exhaustive source of all surgical procedures performed in France. The Cox proportional hazard model was used to test univariate and multivariate associations with band survival and revisional rate. To control for center-specific effects, we performed a frailty analysis, in which each center was assumed to have a random effect indicating the possibility of different baseline risks for patients at different centers.

RESULTS

During the study period, 52,868 patients underwent AGB, and 10,815 bands were removed. The removal rate at 5, 6, and 7 years was 28%, 34%, and 40%, respectively. Female sex, body mass index >50 kg/m, type 2 diabetes, hypertension, dyslipidemia, and sleep apnea were found to be significantly associated with band removal by multivariate analysis. A significant center effect was also found, but this did not change the impact of the highly significant factors already identified. After band removal, the median time to revisional surgery was 1 year (95% confidence interval 1.0-1.1) and the conversion rate at 7 years was 71%.

CONCLUSIONS

With a removal rate of about 6% annually and the need for revisional surgery for more than two-thirds of patients after removal, AGB does not appear to provide a long-term solution for obesity.