A noninvasive test for vesico-ureteric reflux in children

Area of Science:

• Pediatric Urology
• Medical Device Development
• Diagnostic Imaging

Background:

• Vesico-ureteric reflux (VUR) diagnosis traditionally requires urethral catheterization, causing significant patient and parental anxiety.
• This anxiety often leads to families refusing essential diagnostic evaluations for VUR.
• A noninvasive diagnostic method is needed to improve VUR assessment compliance and reduce distress.

Purpose of the Study:

• To develop and evaluate a novel, noninvasive device for diagnosing vesico-ureteric reflux (VUR) in children.
• To assess the device's accuracy in detecting VUR without the need for urethral catheterization.
• To provide a less anxiety-provoking alternative for VUR diagnosis.

Main Methods:

• The study involved 54 children with a history of VUR, assessed using a new acoustic signal-processing device during urination.
• Bladder volume and pelvi-ureteric junction were localized via ultrasonography prior to sensor placement.
• The device recorded and analyzed acoustic signals to determine VUR presence, with the analysis team blinded to VUR status.

Main Results:

• The noninvasive device achieved interpretable signals in 89% (54/61) of renal units assessed.
• It correctly identified VUR in 35 of 37 refluxing units and correctly identified absence of VUR in 16 of 17 units.
• The device accurately predicted VUR resolution in four cases, later verified by radionuclide cystography.

Conclusions:

• The developed noninvasive diagnostic technique demonstrates high accuracy in detecting and verifying vesico-ureteric reflux (VUR).
• This technology offers a promising, anxiety-free alternative to traditional catheterization-based VUR diagnosis.
• Further refinements could enable widespread application of this device for children with suspected VUR.