Efficacy and safety of standard and anti-reflux self-expanding metal stent: A systematic review and meta-analysis of randomized controlled trials.

Compared to the standard stent, the anti-reflux stent showed a trend towards reduction in the dysphagia score without reaching a statistical significance [Standardized mean difference (SMD): -0.33 (-0.71, 0.05); P = 0.09, I 2 : 37%].

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Although more studies showed increased risk of bleeding, stent occlusion, and stent migration with SS; pooled data did not reach statistical significance[ 6 , 10 , 12 , 13 , 15 ].

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Even though a favorable trend was seen towards ARS[ 11 , 12 , 15 ] in improving gastroesophageal reflux and dysphagia score, pooled statistical analysis did not show significant difference between those two stents.

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