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Reduction of esophageal stent migration rate with a novel over-the-scope fixation device (with video)

Published:February 07, 2022DOI:https://doi.org/10.1016/j.gie.2022.02.001

      Background and Aims

      Self-expandable metal stent (SEMS) placement is routinely performed in a variety of benign and malignant GI diseases. One of the most frequent adverse events after esophageal SEMS placement is stent migration. We evaluated a novel over-the-scope clip device (stentfix OTSC; Ovesco Endoscopy, Tuebingen, Germany) designed and approved for SEMS fixation.

      Methods

      This single-center retrospective observational cohort study was performed to analyze stent migration rates before and after availability of the stentfix OTSC device. A cohort of patients who consecutively underwent SEMS fixation with the stentfix OTSC system (SF cohort) was compared with an historical cohort of patients who did not receive stentfix OTSC fixation or any other stent fixation method (NF cohort) before the stentfix OTSC system became available. Outcome variables including technical success, adverse events and clinical success were analyzed.

      Results

      Seventy-seven patients (SF cohort, 26; NF cohort, 51) underwent esophageal SEMS implantation for malignant (69%) and benign (31%) conditions. The technical success rate of stent fixation was 100%, and no procedure-related adverse events were observed. The stent migration rate was significantly lower in the SF cohort compared with the NF cohort (8.3% vs 35.4%, P < .001), indicating a relative risk reduction of 76.5% associated with stentfix OTSC application. Stent implantation across the gastroesophageal junction was identified as a predictor of stent migration.

      Conclusions

      In patients with benign or malignant gastroesophageal diseases, there was a significantly lower stent migration rate in patients managed with the stentfix OTSC system compared with those without stent fixation. The application was technically successful in all cases, and no adverse events related to clip application or removal were observed.

      Abbreviations:

      OTSC (over-the-scope clip), SEMS (self-expandable metal stent)
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