Bladder function in infants

Area of Science:

• Pediatric Urology
• Neonatal Physiology
• Urodynamics

Background:

• Urodynamic assessment is crucial for evaluating lower urinary tract function.
• Establishing normative data for neonates and infants is essential for accurate diagnosis.
• Previous studies have limited data on early infant urodynamics.

Purpose of the Study:

• To define normal urodynamic parameters in neonates and infants.
• To characterize the evolution of urodynamic findings during early development.
• To differentiate typical findings from potential pathologies.

Main Methods:

• Systematic review of existing literature on infant urodynamics.
• Analysis of urodynamic parameters including bladder capacity, voiding pressures, and detrusor activity.
• Comparison of findings across different age groups within infancy.

Main Results:

• Neonates and infants typically present with small bladder capacity and high voiding pressures.
• High voiding pressures are more pronounced in male infants.
• Dyscoordination during voiding is common; detrusor overactivity during filling is rare.
• Urodynamic patterns approach those of older children by the end of infancy.

Conclusions:

• High voiding pressure levels and intermittent pelvic floor activity during voiding are considered normal in early infancy.
• Detrusor overactivity during bladder filling is uncommon in this age group.
• Urodynamic findings in infancy show a developmental trajectory towards older pediatric norms.