alexa Safety and efficacy of a new non-foreshortening nitinol stent in malignant gastric outlet obstruction (DUONITI study): a prospective, multicenter study.
Gastroenterology

Gastroenterology

Journal of Gastrointestinal & Digestive System

Author(s): van Hooft JE, van Montfoort ML, Jeurnink SM, Bruno MJ, Dijkgraaf MG,

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Abstract BACKGROUND AND STUDY AIMS: Gastric outlet obstruction (GOO) is a late complication of advanced gastric, periampullary, and duodenal malignancies. Palliation of obstruction is the primary aim of treatment in these patients. Self-expandable metal stents have emerged as a promising treatment option. Our aim was to investigate the safety and efficacy of a new non-foreshortening nitinol duodenal stent. PATIENTS AND METHODS: A total of 52 patients with symptomatic malignant GOO were studied in this prospective multicenter cohort study. All patients received a D-Weave Niti-S duodenal stent (Taewoong Medical, Seoul, South Korea). Patients were followed up until withdrawal of informed consent or death. RESULTS: The cause of GOO was pancreatic cancer in the majority of patients (62\%). The technical and clinical success rates were 96\% and 77\%, respectively. The GOO Scoring System score improved significantly (P < 0.0001) when the scores before stenting were compared with the mean scores until death. Median survival was 82 days and stent patency was observed in 75\% for up to 190 days, accounting for death as a competing risk. In 13 patients (25\%) stent dysfunction occurred (tumor ingrowth in 11, stent migration in two). Over time, the body mass index, the World Health Organization performance score, and the EuroQol visual analog scale revealed a not significant change (P = 0.52, P = 0.43, and P = 0.15, respectively), whereas the global health status improved significantly (P = 0.001). CONCLUSION: Placement of a new non-foreshortening nitinol enteral stent is safe and without major complications. This stent design produces significant relief of obstructive symptoms and improves quality of life in patients with incurable malignant GOO. © Georg Thieme Verlag KG Stuttgart · New York. This article was published in Endoscopy and referenced in Journal of Gastrointestinal & Digestive System

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