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Covered self-expanding transhepatic biliary stents: clinical pilot study
S A Thurnher1, J Lammer, M M Thurnher
1Department of Radiology, University Hospital, Vienna, Austria.
Cardiovascular and Interventional Radiology
|January 1, 1996
Summary
This study shows that a new self-expanding covered stent (Wallstent) is a safe and effective option for treating malignant biliary obstruction, with initial successful deployment in all patients.
Area of Science:
- Gastroenterology and Hepatology
- Interventional Radiology
- Biomedical Engineering
Background:
- Malignant biliary obstruction poses significant challenges in patient care.
- Effective management requires innovative endoprosthetic solutions.
Purpose of the Study:
- To evaluate the preliminary safety and efficacy of a novel self-expanding covered stent for malignant biliary obstruction.
- To assess the feasibility of transhepatic stent deployment in this patient cohort.
Main Methods:
- Five patients with malignant biliary obstruction underwent transhepatic placement of fully covered, self-expanding Wallstents (10 mm diameter, 69 mm length).
- Fluoroscopic guidance was used for stent placement.
- Clinical assessment, serum bilirubin levels, and ultrasound examinations were performed at 1 and 3 months post-procedure.
Main Results:
- All stents were deployed successfully, achieving internal biliary drainage.
- One patient experienced distal stent migration leading to early reobstruction.
- Another patient developed partial reobstruction at 3 months, likely due to sludge formation.
Conclusions:
- The covered, self-expanding Wallstent demonstrates reliable and safe transhepatic deployment for malignant biliary obstruction.
- Further investigation is warranted to address potential complications like migration and sludge formation.