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The voiding pattern of preterm infants with serious periventricular white matter injury Eur Urol Suppl 2014;13;e663
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Wang Y.L. 1 , Wen J.G. 2 , Wen Y.B.2 , Xing L. 3 , Zhang Y.S.2 , Xu Y.M.1 1 Institute
of Clinical Medicine, Dept. of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China, 2 Institute of
Clinical Medicine, Dept. of Urology & Urodynamic Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China, 3 Institute
of Clinical Medicine, The Water and Salt Research Center, University of Aarhus, Aarhus, Denmark
INTRODUCTION & OBJECTIVES: To evaluate the effect of serious periventricular white matter injury on the voiding pattern of preterm infants. MATERIAL & METHODS: Free voiding was continuously observed for 8 hours in 16 normal preterm infants and 19 ones with serious periventricular white matter injury(gestational age: 32–35 weeks; postnatal age: 9-15 days).The voiding frequency, every voided volume, post-void residual volume, empty voiding, awake voiding and interrupted voiding were recorded. These voiding parameters were compared between the normal infants and the ones with serious periventricular white matter injury. RESULTS: The voiding frequency ( (5.1±1.0) vs.(7.0±1.1) ), the awake voiding percentage( (23±11)%vs.(42±7)% ) and the empty voiding percentage ( ( Lower quartile=16%,Median=20%,Upper quartile=28%) vs.( Lower quartile=28%,Median=33%,Upper quartile=40%) were significantly lower, while the voided volume( (19.9±6.6)ml.vs.(15.9±5.3)ml. ) and post-void residual volume (( Lower quartile=1.1ml, Median=2.9ml,Upper quartile=3.3ml) vs.(Lower quartile =0ml, Median=1.7ml,Upper quartile=2.4ml) ) were significantly higher in the injured preterm infants, compared to normal ones (P < 0.05). CONCLUSIONS: Serious periventricular white matter injury has an significant effect on the voiding pattern of preterm infants and the senior nerve center has participated in the voiding reflex of preterm infants. Keywords: Preterm infants, periventricular white matter injury, voiding, senior nerve center.