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, 15 (6), 834-42

Impact of Age, Sex and Body Mass Index on Outcomes at Four Years After Gastric Banding

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Impact of Age, Sex and Body Mass Index on Outcomes at Four Years After Gastric Banding

Ruth Branson et al. Obes Surg.

Abstract

Background: Adjustable gastric banding for weight reduction in severely obese persons allows reversible individualized restriction during postoperative follow-up. It is unknown whether preoperative age, sex and BMI might modulate treatment outcome.

Methods: 404 severely obese patients (79% women; age 42 +/- 0.5 years [mean +/- SEM]; BMI 42.1 +/- 0.2 kg/m2) completed 4-year follow-up after banding. Weight loss, complications, and Bariatric Analysis and Reporting Outcome System (BAROS) scores were recorded prospectively.

Results: 4 years after banding, younger (<50 years) women lost more weight than older (50 years) men (28.2 +/- 0.7% vs 19.4+/- 1.6%; P=0.001); older women and younger men lost similar weight. Patients with preoperative BMI >50 lost more weight than patients with BMI <35 (30.5 +/- 2.3% vs 22.8 +/- 2.6%; P=0.03). 22.3% of patients (n=90) had band system-related complications. Compared to women, men had more band leaks (7.0% vs 1.9%; P=0.007), and older men had more band slippages than younger men (8.4% vs 0.0%; P=0.035). Patients with preoperative BMI >50 were less likely than patients with BMI 35-40 or 40-50 to experience gastric complications (10.6%, 18.8%, 23.0%, respectively), but more likely to experience port/tube complications (15.8%, 2.4%, 7.9%, respectively; P<0.055). BAROS scores were different between men and women (P=0.05), and between younger and older people (P=0.001). Women and younger people were more likely than men and older people to score "very good" (P=0.03, P=0.001, respectively).

Conclusions: Adjustable gastric banding is an effective intermediate-term treatment for severe obesity. Preoperative age, sex, and BMI are important modulators of outcome and should be considered during preoperative evaluation.

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