Ultrasound for Diagnosis of Biliary Dyskinesia
This is a prospective, non-randomized study of 50 people with suspected biliary dyskinesia. The purpose of this study is to investigate if it is possible to use ultrasound to make a diagnosis of a condition called biliary dyskinesia. The investigators null hypothesis is that there will be no statistical difference between the proposed experimental test (Ultrasound) and the HIDA scan (a nuclear medicine hepatobiliary system scan) in the diagnosis of biliary dyskinesia.
|Study Design:||Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Diagnostic
|Official Title:||Study to Investigate the Role of Ultrasound for Diagnosis of Biliary Dyskinesia|
- Does ultrasound test detect contraction of gallbladder following injection of a hormone cholecystokinin (CCK), and is the degree contraction as accurate as the accepted clinical standard (the HIDA scan) for diagnosis of biliary dyskinesia. [ Time Frame: After HIDA scan performed ] [ Designated as safety issue: No ]
|Study Start Date:||May 2008|
|Study Completion Date:||June 2010|
|Primary Completion Date:||June 2010 (Final data collection date for primary outcome measure)|
There will be no experimental or control group, rather each individual will act as his/her own control.
Procedure: CCK Injection and Ultrasound
All subjects, whether they participate in this study or not, will undergo the HIDA scan as this is the accepted standard of care for diagnosing biliary dyskinesia. If a given subject agrees to participate in this study, he/she will be asked to undergo the following study procedures:
If a pregnancy test has not already been done, a urine pregnancy test will be done for women of childbearing potential.
An intravenous line (IV) will be inserted (if not already in place), and a standard dose of CCK (Kinevac®- 0.02 µg/kg) will then be injected according to the package insert. Ultrasound will be used to measure dimensions of the gallbladder (length, width and height) every minute for 35 minutes following injection of the CCK. This will be done by applying ultrasound jelly to the upper part of the abdomen and ultrasound probe will be used to obtain optimal images for three dimensional analysis of the subject's gallbladder.
|United States, Texas|
|Texas Tech University Health Sciences Center|
|Lubbock, Texas, United States, 79430|
|Principal Investigator:||Thomas Warren, MD||Texas Tech University Health Sciences Center|