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Background <p>Several retrospective studies suggest that adding a non-adjustable silicone ring to a Roux-en-Y gastric bypass (RYGB) results in more weight loss and prevents weight regain in the long term. The aim of this study was to evaluate the effect of a banded Roux-en-Y gastric bypass (B-RYGB) on weight loss outcomes in a randomized controlled trial (RCT).</p> Methods <p>In this single center RCT, 130 patients were divided into two groups: a standard Roux-en-Y gastric bypass (S-RYGB) or a B-RYGB using a Minimizer® ring. Subsequently, weight loss, morbidity, reduction of obesity-associated medical conditions, quality of life (QoL), and complication rates were measured during a follow-up period of five years. A two-sided <i>p</i> &lt; 0.05 (with 95% confidence interval) indicated statistical significance.</p> Results <p>After five years, mean percentage total body weight loss (%TBWL) was 30.5% in the S-RYGB versus 31.8% in the B-RYGB group (<i>p</i> &gt; 0.05). The follow-up percentage was 81%. Overall, no significant differences in complication rates, resolution of obesity-associated medical conditions, and QoL were found between the two groups. In the B-RYGB group, 8 (12%) silicone rings were removed due to symptoms of dysphagia.</p> Conclusion <p>B-RYGB is a safe procedure showing similar comorbidity when compared to a S-RYGB. However, B-RYGB led to a higher rate of postoperative dysphagia which poses a risk of ring removal over time. The results from this RCT do not support the hypothesis that implantation of a non-adjustable silicone ring improves long-term weight loss outcomes.</p> Graphical abstract <p></p>

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Five-year outcomes of a randomized controlled trial evaluating a non-adjustable ring in Roux-en-Y gastric bypass

  • 期刊论文

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  • 发表日期：

    2025年2月14日

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  • Sietske Okkema,
  • Abel Boerboom,
  • Willem den Hengst,
  • Edo Aarts,
  • Frits Berends,
  • Eric Hazebroek

摘要

Background

Several retrospective studies suggest that adding a non-adjustable silicone ring to a Roux-en-Y gastric bypass (RYGB) results in more weight loss and prevents weight regain in the long term. The aim of this study was to evaluate the effect of a banded Roux-en-Y gastric bypass (B-RYGB) on weight loss outcomes in a randomized controlled trial (RCT).

Methods

In this single center RCT, 130 patients were divided into two groups: a standard Roux-en-Y gastric bypass (S-RYGB) or a B-RYGB using a Minimizer® ring. Subsequently, weight loss, morbidity, reduction of obesity-associated medical conditions, quality of life (QoL), and complication rates were measured during a follow-up period of five years. A two-sided p < 0.05 (with 95% confidence interval) indicated statistical significance.

Results

After five years, mean percentage total body weight loss (%TBWL) was 30.5% in the S-RYGB versus 31.8% in the B-RYGB group (p > 0.05). The follow-up percentage was 81%. Overall, no significant differences in complication rates, resolution of obesity-associated medical conditions, and QoL were found between the two groups. In the B-RYGB group, 8 (12%) silicone rings were removed due to symptoms of dysphagia.

Conclusion

B-RYGB is a safe procedure showing similar comorbidity when compared to a S-RYGB. However, B-RYGB led to a higher rate of postoperative dysphagia which poses a risk of ring removal over time. The results from this RCT do not support the hypothesis that implantation of a non-adjustable silicone ring improves long-term weight loss outcomes.

Graphical abstract