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Acta Paediatr. 2014 Mar;103(3):e106-10. doi: 10.1111/apa.12525. Epub 2014 Jan 6.

Serious periventricular white matter injury has a significant effect on the voiding pattern of preterm infants.

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  • 1Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou City, Henan Province, China.



To evaluate the effect of serious periventricular white matter injury (PWMI) on the voiding patterns of preterm infants.


Free voiding was continuously observed for eight hours in 19 preterm infants with serious PWMI and 16 infants without PWMI. The infants had a gestational age of 32-35 weeks and a postnatal age of 9-15 days. Voiding frequency, voided volume, postvoid residual volume, empty voiding, awake voiding and interrupted voiding were recorded and compared between the two groups of infants.


The voiding frequency ((5.1 ± 1.0) vs. (7.0 ± 1.1)), awake voiding percentage ((23 ± 11)% vs. (42 ± 7)%) and empty voiding percentage (lower quartile = 16% vs. 28%, median = 20% vs. 33%, upper quartile = 28% vs. 40%) were significantly lower, while the voided volume ((19.9 ± 6.6) mL vs.(15.9 ± 5.3) mL)and postvoid residual volume (lower quartile = 1 mL. vs. 0 mL., median = 3 mL. vs. 2 mL., upper quartile = 3 mL. vs. 2 mL.) were significantly higher in the injured preterm infants, compared with the healthy infants (p < 0.05).


Serious PWMI has a significant effect on the voiding pattern of preterm infants, and the senior nerve centre plays a role in the voiding reflex of preterm infants.

©2013 Foundation Acta Paediatrica. Published by John Wiley & Sons Ltd.


Periventricular white matter injury; Preterm infants; Senior nerve centre; Voiding

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