Evaluation of the Use of Metal Stents as Part of the Treatment of Benign Biliary Strictures

This study has been completed.
Information provided by (Responsible Party):
University of Florida
ClinicalTrials.gov Identifier:
First received: November 5, 2010
Last updated: August 31, 2015
Last verified: August 2015

The purpose of this study is to study the evaluation of the use of metal stents as part of the treatment of benign biliary strictures.

Condition Intervention
Benign Biliary Strictures
Procedure: Endoscopic Retrograde Cholangiopancreatography (ERCP)

Study Type: Observational
Study Design: Observational Model: Case-Only
Time Perspective: Prospective
Official Title: Prospective Evaluation of the Clinical Utility of Placement of Metal Stent for Benign Biliary Strictures

Resource links provided by NLM:

Further study details as provided by University of Florida:

Primary Outcome Measures:
  • Short Term Success Rate in the Resolution of Biliary Strictures [ Time Frame: 6 months ] [ Designated as safety issue: No ]
    Short-term success was defined as resolution of the stricture as documented by rapid drainage of contrast out of the proximal biliary tree and easy passage of stone extraction balloon inflated to the size of the proximal bile duct. If the biliary stricture had resolved at the 6-month follow-up ERCP, patients were classified as short-term success. If stricture was not resolved at 6-month ERCP then a new SEMS was placed; if the stricture had resolved at the time of the second stent removal, the patient was also classified as short-term success.

  • Long-term Success Rate in Resolution of Biliary Strictures [ Time Frame: at least 12 months after stent removal ] [ Designated as safety issue: No ]
    Long-term success was defined as no clinical evidence of recurrence of the biliary stricture during the follow-up period as documented by laboratory findings or imaging and no further need for further endoscopic or surgical interventions.

Secondary Outcome Measures:
  • Number of Endoscopic Treatments Per Patient [ Time Frame: At time of procedure ] [ Designated as safety issue: No ]
    The average number of ERCPs performed per patient required for resolution of benign strictures.

  • Ease of Stent Removal [ Time Frame: at time of procedure ] [ Designated as safety issue: No ]
    The ease of stent removal was graded on a 4-point scale (with ease, mild difficulty, significant difficulty, and failed).

  • Frequency and Severity of Adverse Events (Including Stent Migration) [ Time Frame: up to 12 months ] [ Designated as safety issue: Yes ]
    Adverse events were defined and graded using the 2010 American Society for Gastrointestinal Endoscopy consensus criteria

Enrollment: 23
Study Start Date: May 2009
Study Completion Date: May 2015
Primary Completion Date: May 2015 (Final data collection date for primary outcome measure)
Groups/Cohorts Assigned Interventions
benign biliary strictures
All patients who have a medical indication for an ERCP to place a stent in their benign biliary strictures
Procedure: Endoscopic Retrograde Cholangiopancreatography (ERCP)
Endoscopic Retrograde Cholangiopancreatography (ERCP) with placement of metal stent in the bile duct

Detailed Description:

In patients with benign biliary strictures, the use of fully covered self-expandable metal stents (SEMS) has been proposed as an alternative to plastic stenting, but high quality prospective data is sparse. This study was performed to evaluate the long -term effectiveness and safety of a new fully covered SEMS for benign biliary strictures.


Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population

Patients who have a medical indication for endoscopic therapy of benign biliary stictures and are referred for the procedure as part of their standard medical care will be considered for the study.


Inclusion Criteria:

  1. Subject is 18 years or older
  2. Subject has benign biliary stricture
  3. Subject must be able to give informed consent

Exclusion Criteria:

  1. Any contraindication to Endoscopic Retrograde Cholangiopancreatography (ERCP)
  2. The subject is unable to give informed consent
  Contacts and Locations
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Please refer to this study by its ClinicalTrials.gov identifier: NCT01238900

United States, Florida
Shands at UF endoscopy center
Gainesville, Florida, United States, 32608
Sponsors and Collaborators
University of Florida
Principal Investigator: Peter Draganov, MD University of Florida
  More Information

No publications provided

Responsible Party: University of Florida
ClinicalTrials.gov Identifier: NCT01238900     History of Changes
Other Study ID Numbers: Benign Biliary Strictures
Study First Received: November 5, 2010
Results First Received: June 29, 2015
Last Updated: August 31, 2015
Health Authority: United States: Institutional Review Board

Additional relevant MeSH terms:
Constriction, Pathologic
Bile Duct Diseases
Biliary Tract Diseases
Digestive System Diseases
Pathological Conditions, Anatomical

ClinicalTrials.gov processed this record on October 06, 2015