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Histologic chorioamnionitis and acute neurologic impairment in premature infants.

AbstractOBJECTIVE:
To determine if histologic chorioamnionitis is associated with acute neurologic impairment as evaluated by auditory brainstem response in premature infants.
METHODS:
A prospective study was performed to compare auditory neural function at birth between premature infants with maternal histologic chorioamnionitis and infants without maternal histologic chorioamnionitis. Our inclusion criteria was 28-33 weeks gestational age (GA) infants who had maternal placental histopathology performed. Infants with toxoplasmosis, other infections, rubella, cytomegalovirus and herpes simplex (TORCH) infections, chromosomal disorders, cranio-facial anomalies and/or unstable condition were excluded. Bilateral monaural auditory brainstem evoked responses were performed using 80 dB nHL click stimuli at a repetition rate of 29.9/s within 48 h after birth.
RESULTS:
Of 101 infants who met study criteria, 29 infants were born with history of maternal histologic chorioamnionitis. There were no significant differences between infants with histologic chorioamnionitis and infants without histologic chorioamnionitis in perinatal factors except for GA, pregnancy induced hypertension, and exposure to antenatal magnesium sulphate. After controlling for confounders, histologic chorioamnionitis was not associated with prolonged absolute wave latencies I, III, and V and/or decreased frequency of mature auditory waveform compared to infants without histologic chorioamnionitis.
CONCLUSION:
Histologic chorioamnionitis is not associated with neurologic impairment at birth in premature infants.
AuthorsSanjiv B Amin, Hongyue Wang
JournalThe journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians (J Matern Fetal Neonatal Med) Vol. 23 Issue 10 Pg. 1165-71 (Oct 2010) ISSN: 1476-4954 [Electronic] England
PMID20350238 (Publication Type: Journal Article, Research Support, N.I.H., Extramural)
Topics
  • Case-Control Studies
  • Chorioamnionitis (pathology)
  • Evoked Potentials, Auditory, Brain Stem
  • Female
  • Gestational Age
  • Humans
  • Infant, Newborn
  • Infant, Premature
  • Male
  • Nervous System Diseases (diagnosis)
  • Pregnancy
  • Prospective Studies

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