Gender difference in achieving rate of maturity of the vesicoureteric junction.
Pediatr Radiol
; 37(2): 189-93, 2007 Feb.
Article
en En
| MEDLINE
| ID: mdl-17180364
ABSTRACT
BACKGROUND:
Our previous study on the Doppler waveform of the urinary jet at the vesicoureteric junction (VUJ) indicates that there is an active sphincteric mechanism in humans. We have also shown that there are immature and mature patterns of the jet, and the VUJ matures around the age of 4 years.OBJECTIVE:
To determine if there is any gender difference in the time of achieving maturity of the VUJ. MATERIALS ANDMETHODS:
The Doppler pattern of the jets from both ureters was recorded in 273 normal boys and 248 normal girls. The subjects were considered to have immaturity of the VUJ if an immature jet waveform was detected in either ureter.RESULTS:
The mean age of VUJ maturity was 4.54 years for the whole population, 4.88 years for boys and 4.34 years for girls. The difference between ROC curves for boys and girls was not significant (P > 0.05, simple Z test).CONCLUSION:
There is no significant gender difference in the maturation of the VUJ. Detection of a persistent immature jet pattern beyond the age of maturity might have prognostic implications if there is a concurrent pathological condition related to the urinary tract in children.
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Bases de datos:
MEDLINE
Asunto principal:
Uréter
/
Vejiga Urinaria
/
Envejecimiento
Tipo de estudio:
Diagnostic_studies
/
Prognostic_studies
Límite:
Adolescent
/
Child
/
Child, preschool
/
Female
/
Humans
/
Infant
/
Male
/
Newborn
País/Región como asunto:
Asia
Idioma:
En
Revista:
Pediatr Radiol
Año:
2007
Tipo del documento:
Article
País de afiliación:
China