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[Primary vesico-ureteral reflux of the newborn]

D Benini1, C Pizzini

  • 1Divisione di Pediatria, Ospedale Sacro Cuore. daniela.benini@sacrocuore.it

La Pediatria Medica E Chirurgica : Medical and Surgical Pediatrics
|April 12, 2008
PubMed

Insights

Voiding Detrusor Pressure (VDP) is higher in infant boys than girls, especially those with vesico-ureteral reflux (VUR). Decreasing VDP and hypercontractility in infancy is crucial for VUR resolution.

Area of Science:

  • Pediatric Urology
  • Infant Urology
  • Renal Physiology

Background:

  • Vesico-ureteral reflux (VUR) and urinary tract infections (UTI) disproportionately affect male infants.
  • Understanding pressure dynamics in the infant urinary tract is key to managing VUR.
  • Previous studies suggest sex-based differences in bladder pressure during infancy.

Purpose of the Study:

  • To investigate Voiding Detrusor Pressure (VDP) in male and female infants.
  • To compare VDP in infants with and without VUR.
  • To explore the role of detrusor hypercontractility in infant VUR.

Main Methods:

  • Utilized urodynamic measurements to assess VDP in infants.
  • Compared VDP values between healthy males, healthy females, and males with VUR.
  • Observed for signs of detrusor hypercontractility in infants with severe VUR.

Main Results:

  • Healthy male infants exhibit higher VDP than healthy female infants.
  • Males with VUR demonstrate significantly higher VDP compared to males without VUR.
  • Severe VUR in male infants can be associated with detrusor hypercontractility.

Conclusions:

  • Elevated VDP and potential hypercontractility in male infants are linked to VUR.
  • A natural decrease in VDP and hypercontractility during infancy facilitates VUR resolution.
  • These findings highlight pressure dynamics as a critical factor in infant VUR management.

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