Collection of duodenal bile in infants and children by the string test

Area of Science:

• Pediatric Gastroenterology
• Biliary System Diagnostics
• Minimally Invasive Procedures

Background:

• Traditional duodenal bile collection methods can be invasive, requiring sedation and imaging.
• Existing diagnostic tools for conditions like giardiasis and bacterial overgrowth often necessitate intestinal intubation.

Purpose of the Study:

• To evaluate the efficacy and safety of the string test for collecting duodenal bile samples in pediatric patients.
• To establish the string test as a viable alternative to more complex biliary sampling techniques.

Main Methods:

• The Entero-Test Pediatric string device was administered to fifteen children.
• Collected string samples were analyzed for the presence and characteristics of bilirubin conjugates.

Main Results:

• The string test procedure was successfully completed in all participants without any complications.
• Analysis confirmed the presence of bilirubin conjugates in the collected fluid, consistent with duodenal bile composition.
• The distal end of the string consistently yielded yellow, pigmented fluid indicative of duodenal origin.

Conclusions:

• The string test is a safe and effective method for obtaining duodenal bile samples in infants and children.
• This minimally invasive technique simplifies the diagnostic process for pediatric biliary assessments.