The Impact of Puncture Angle on Total Fluoroscopy Time Reduction During Percutaneous Biliary Drainage

Ultrasound and Fluoroscopy Guided Percutaneous Transhepatic Biliary Drainage in Patients With Malignant Bile Duct Obstruction - Impact of Puncture Angle on Total Fluoroscopy Time Reduction

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT04653987

Enrollment

130

Registered

2020-12-04

Start date

2016-01-31

Completion date

2020-11-30

Last updated

2020-12-04

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Interventional Radiology

Keywords

biliary drainage, fluoroscopy time, puncture angle

Brief summary

The purpose of this study is to retrospectively assess the importance of initial bile duct puncture angle on total fluoroscopy time and overall efficacy during ultrasound and fluoroscopy guided percutaneous transhepatic biliary drainage (PTBD) performed for patients with malignant biliary hilar obstruction.

Detailed description

Data used for this study will be collected from medical records of patients who underwent PTBD at the Interventional radiology department. Only patients who received percutaneous biliary drainage performed with right sided intercostal approach will be included in study. The initial puncture was ultrasound-guided in all patients. Any subsequent step of the procedure was performed under fluoroscopy. The cumulative fluoroscopy time (the total time of the exposure to X rays during intervention) after the US guided puncture was recorded. It will be used as an indirect measure of the complexity of the intervention and as an important parameter of radiation exposure. The patients will be divided into two groups based on the puncture angle: ≤30° group and \>30° group. The two groups will be retrospectively analysed for technical success, fluoroscopy time and complications.

Interventions

PROCEDUREPercutaneous biliary drainage

Study design

Observational model

COHORT

Time perspective

OTHER

Eligibility

Sex/Gender

ALL

Age

18 Years to 90 Years

Inclusion criteria

* pathological confirmation or imaging data confirming malignant disease causing bile duct obstruction, performance status 0-1.

Exclusion criteria

* terminally ill patiens, performance status ˃2, hepatic decompensation (including ascites), severe underlying cardiac or renal diseases and coagulation disorders

Design outcomes

Primary

Measure	Time frame	Description
Total fluoroscopy time	during intervention	The initial puncture was ultrasound-guided in all patients. Any subsequent step of the procedure (PTBD) was performed under fluoroscopy. Total fluoroscopy time will be collected from Radiation Dose Report obtained in the angio suite workstation software ( General Electric Innova 540)

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026