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Cystometry in infants and children with no apparent voiding symptoms
British Journal of Urology
|April 2, 1998
Summary
Most infants and children without voiding symptoms have stable bladders. Detrusor instability can occur late in cystometry, with bladder capacity increasing with age.
Area of Science:
- Pediatric Urology
- Urodynamics
- Pediatric Nephrology
Background:
- Assessing bladder function in asymptomatic children is crucial for understanding normal development.
- Previous studies have not extensively evaluated bladder dynamics in this specific pediatric cohort.
Purpose of the Study:
- To evaluate bladder function in infants and children without apparent voiding symptoms.
- To establish normative data for bladder capacity, compliance, and voiding pressures.
Main Methods:
- Slow-filling cystometry with simultaneous perineal electromyography was performed on 83 children (aged 3 days to 12 years).
- Participants had no neurological or lower urinary tract pathology but had undergone or were scheduled for surgery.
- Voiding variables were compared across age, sex, and body weight categories.
Main Results:
- Mean post-void residual urine volume (PVR) was low (<10 mL) in both sexes.
- Detrusor instability (DI) was observed in 10.8% of participants during the late filling phase.
- Bladder capacity and compliance significantly increased with age and body weight.
Conclusions:
- Asymptomatic infants and children generally exhibit stable bladder function.
- Detrusor instability can manifest in the late filling phase of cystometry.
- Normal bladder development shows a clear increase in capacity and compliance with age.