KMID : 0361720150260010067
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Korean Journal of perinatology 2015 Volume.26 No. 1 p.67 ~ p.77
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Preliminary Study on Neurodevelopmental Outcome and Placental Pathology among Extremely Low Birth Weight Infants
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Oh Seong-Hee
Kim Jong-Jae Do Hyun-Jeong Lee Byong-Sop Kim Ki-Soo Kim Ai-Rhan
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Abstract
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Purpose: To investigate the relationship between placental pathology and neurodevelopmental outcomes among extremely low birth weight (ELBW) infants.
Methods: Pathology of placentas from ELBW infants born at a tertiary neonatal intensive care unit from January 2007 to December 2012 were reviewed and placental histology was grouped into 3 categories by a designated pathologist: acute chorioamnionitis (ACA), maternal vascular underperfusion (MVU), and control group. Matched ELBW infants were tested for significant neurodevelopmental delays defined as mental developmental index (MDI) or psychomotor developmental index (PDI) <70, using Bayley Scales of Infant Development-II (BSID-II).
Results: The mean gestational age and birth weight of 175 infants were 27.1¡¾2.5 weeks and 764.7¡¾152.3 g respectively. Placental histology revealed MVU (48.0%), ACA (25.1%) and control (26.9%) in distribution. There were less significant patent ductus arteriosus in MVU group than in control group [adjusted odds ratio (OR)=0.331, P=0.011]. The frequencies of other neonatal diseases and mortality were similar in 3 groups. Sixty four of 175 infants were examined for BSID-II at mean corrected 19.9¡¾3.2 months. MVU was associated with significant mental developmental delay (OR=5.185, P=0.036), but after adjustment for head circumference/weight at birth, the statistically significance of association disappeared (adjusted OR=4.391, P=0.075). ACA did not affect neonatal and neurodevelopmental outcomes.
Conclusion: The result of placenta biopsy could be a useful tool in counseling parents for future neurodevelopmental outcome, however, further studies are required to define definitive association in between placenta biopsy and neurodevelopmental outcomes.
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KEYWORD
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Placenta, Chorioamnionitis, Underperfusion, Neurodevelopmental, Extremely low birth weight
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