A Study on Voiding Pattern of Newborns with Hypoxic Ischemic Encephalopathy Li Yang, Jianguo Wen, Chenxu Huang, Wen Zhu Pediatric Urodynamic Center and Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
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A Study on Voiding Pattern of Newborns with Hypoxic Ischemic
Encephalopathy
Li Yang, Jianguo Wen, Chenxu Huang, Wen ZhuPediatric Urodynamic Center and Department of Urology,
The First Affiliated Hospital of Zhengzhou University,
Zhengzhou, 450052, China
Hypothesis / aims of study
It is unclear that whether or not the voiding pattern of newborns with hypoxic ischemic encephalopathy (HIE) is affected. We hypothesized that HIE could cause the voiding pattern change via the influence on the brain. The aim of study is to investigate the difference of voiding pattern between newborns with and those without HIE.
Study design, materials and methods
A total of 40 hospitalized newborns aged 4 to 21 days at The First Affiliated Hospital of Zhengzhou University from Mar to May 2010 were included in this study. Twenty-one of them were preterm newborns with HIE another 19 preterm newborns without HIE.
The voided volume, post void residual (PVR) volume, consciousness at voiding, voiding time, voiding frequency as well as the quantity of intake milk and liquid within 4 hours from 8AM to 12AM were recorded.
Ultrasound and Balance
The PVR volume was measured by
using ultrasound.
The diaper weight was measured by using balance.
Observation
PVR volume was recorded by same experienced investigators.
Observation
Voiding was observed by detecting diapper per minute.
Operator was observing the voiding.
Results
Voided volume and rate of consciousness at voiding was significant lower in newborns with HIE compared with the control group, whereas PVR volume and voiding frequency were significant higher.
ResultsTable 1. 4-hour voiding observation in preterm newborn with and without HIE (Mean±SD)
Fig.1 — Comparison of mean voided volume and PVR volume between 21 HIE neonates and 19 preterm newborns
HIE = hypoxic ischemic encephalopathy; PVR = post void residual
Mean voided volume
0
5
10
15
20
25
HIE newbornPreterm newborn
PVR volume
Urine volume(ml)
Concluding message
The difference of voiding pattern between newborns with HIE and those without HIE is significant.
The differences in voiding pattern supported the concept that the higher centers of the central nervous system were involved in the control of voiding, HIE had a significant effect on voiding pattern in preterm newborn.