Nafamostat mesilate prophylaxis (20 or 50 mg) is effective in preventing post-ERCP pancreatitis. However, the preventive effect of high-dose nafamostat mesilate (50 mg) is not significant in high-risk patients.

Endoscopic placement of a double-layered stent is a safe and effective modality for the palliation of malignant gastroduodenal obstruction. However, considering reintervention, this stent does not seem to add any clear advantage compared with preexisting uncovered stents. Migration, especially within the first two weeks, and stent collapse are still unresolved problems. The device should be fixed or the design modified to reduce these problems.

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