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  • Title: Double anchor lock fixing method to prevent stent displacement in endoscopic ultrasound-guided gastroenterostomy: a porcine study.
    Author: Gao H, Sun S, Wang G, Guo J, Wang S, Liu X, Ge N, Jiang J, Sheng S.
    Journal: Surg Endosc; 2022 Jul; 36(7):4854-4861. PubMed ID: 34859303.
    Abstract:
    BACKGROUND: Endoscopic ultrasound-guided gastroenterostomy (EUS-GE) is widely used in patients with gastric outlet obstruction (GOO). Recurrence of obstruction symptoms caused by stent migration is the major reason for reintervention in EUS-GE. To solve this problem, we proposed developing a double anchor lock (DAL) fixing stent method for EUS-GE. The safety and efficacy of the DAL fixing stent method were evaluated in this study. METHODS: Sixteen Bama miniature pigs were randomly divided into an experimental group (n = 8) and a control group (n = 8). A gastric outlet obstruction model was established for all the pigs. The experimental group was treated with the DAL fixing stent method for EUS-GE, while the control group was treated with EUS-GE. Three-month stent migration rate, remission rate of GOO, re-occlusion intervention rate, weight change, and incidence of procedure-related complications of EUS-GE were analyzed and estimated in the two groups. RESULTS: EUS-GE was successfully completed in every subject in both groups. Symptoms of digestive tract obstruction can be relieved in all animals. The stent existence rate in the 3 months was higher in the experimental group than in the control group (87.5% vs. 12.5%, P = 0.012). Except for one animal in the experimental group in which there was pneumoperitoneum due to a stent insertion failure, no animal experienced bleeding or perforation. CONCLUSION: The DAL fixing stent method, which can effectively prevent stent migration, is safe and simple. EUS-GE can effectively relieve the symptoms of digestive tract obstruction.
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