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Related Experiment Video

Updated: Jul 13, 2026

Implementation of Non-invasive Point of Care Transient Elastography for Evaluation of Liver Disease in Pediatric Populations with Cystic Fibrosis

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Development of an objective score to quantify the pediatric cystometrogram.

A L MacNeily¹, M P Leonard, P D Metcalfe

¹Division of Pediatric Urology, University of British Columbia, Vancouver, British Columbia. amacneily@cw.bc.ca

The Journal of Urology

|August 21, 2007

Summary

A new scoring tool reliably quantifies pediatric cystometrograms, assessing bladder capacity, compliance, activity, and sensation. This method demonstrates strong reliability for objective detrusor behavior evaluation in children.

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Area of Science:

Pediatric Urology
Urodynamics
Medical Device Development

Background:

Pediatric cystometrograms are crucial for assessing lower urinary tract dysfunction.
Objective quantification of pediatric cystometrogram findings is challenging.
Existing methods may lack standardized quantitative assessment tools.

Purpose of the Study:

To develop and validate a reliable scoring tool for quantitative assessment of the pediatric cystometrogram.
To establish objective metrics for bladder capacity, compliance, activity, and sensation in pediatric patients.
To provide a tool for consistent evaluation of detrusor behavior.

Main Methods:

Developed scoring formulas for expected capacity (EV) and compliance (EV20) based on age.
Assigned ordinal scores (1-5) based on observed vs. expected findings.
Quantified activity and sensation with scores ranging from 0-5 and 0-3, respectively.
Evaluated inter- and intrarater reliability using 87 blinded cystometrograms scored by 3 pediatric urologists.

Main Results:

High intrarater reliability for total scores (80% within +/- 1 point) and component scores (94% within +/- 1 point).
Strong Spearman's rank correlations (0.82-0.98) for total scores indicating test-retest consistency.
Excellent interrater reliability with 89% of component scores between urologists within +/- 1 point and high correlation coefficients (0.80-0.96).

Conclusions:

The developed scoring tool reliably quantifies pediatric cystometrograms.
This tool offers objective assessment of detrusor behavior before and after interventions.
Further applications may refine this valuable quantitative assessment tool.