Informed consent of procedural modalities and risks was collected from each patient. GDS placement was performed under conscious sedation. The stricture was identified endoscopically, and the guidewire was passed through the stenosis. After confirming the location and length of duodenal stenosis using a contrast medium, the duodenal stent was positioned across the stricture under endoscopic and fluoroscopic guidance. Stent type and length were chosen according to stricture site and length. A WallFlex DS (6, 9, or 12 cm in length, 22 mm in body diameter; Boston Scientific, Marlborough, MA, USA), Niti-S DS (covered or uncovered types 6, 8, 10, or 12 cm in length, 22 mm in body diameter; Taewoong Medical, Seoul, Korea), or Evolution DS (6, 9, or 12 cm in length, 22 mm in body diameter; Cook Medical, Winston-Salem, NC, USA) was selected based on the physician’s judgment. Finally, the stent was deployed, and its patency was confirmed by injecting a contrast medium.
Protocol detail
Duodenal Stenosis Stent Placement
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Body
Conscious sedation
Contrast medium
Duodenal
Endoscopic
Evolution
Fluoroscopic
Niti
Patient
Physician
Stenosis of duodenal
Stent
Stricture
Corresponding Organization : Kanazawa University Hospital
Other organizations : Kanazawa Hospital, Kanazawa Medical Center, National Hospital Organization, Public Central Hospital of Matto Ishikawa, Japanese Red Cross Kanazawa Hospital, Fukui Prefectural Hospital, Toyama Prefectural Central Hospital, Tonami General Hospital, Kanazawa City Hospital, Keiju Medical Center, Ishikawa Prefectural Central Hospital, Toyama City Hospital, Komatsu (Japan)
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Variable analysis
independent variables
- Stent type (WallFlex DS, Niti-S DS, or Evolution DS)
- Stent length (6, 9, or 12 cm)
- Successful placement of duodenal stent
- Patency of stent confirmed by contrast medium injection
- Stricture site and length
- Stent body diameter (22 mm)
- Conscious sedation during the procedure
- Endoscopic and fluoroscopic guidance for stent placement
- Informed consent from each patient
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