Utility of prenatal Doppler ultrasound to predict neonatal impaired cerebral autoregulation

Sruthi R. Polavarapu, Garrett D. Fitzgerald, Stephen Contag, Suma B. Hoffman

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13 Scopus citations


Objective: Determine if abnormal prenatal Doppler ultrasound indices are predictive of postnatal impaired cerebral autoregulation. Study design: Prospective cohort study of 46 subjects, 240-296 weeks' gestation. Utilizing near-infrared spectroscopy and receiver-operating characteristic analysis, impaired cerebral autoregulation was defined as >16.5% time spent in a dysregulated state within 96 h of life. Normal and abnormal Doppler indices were compared for perinatal outcomes. Results: Subjects with abnormal cerebroplacental ratio (n = 12) and abnormal umbilical artery pulsatility index (n = 13) were likely to develop postnatal impaired cerebral autoregulation (p ≤ 0.02). Abnormal cerebroplacental ratio was associated with impaired cerebral autoregulation between 24 and 48 h of life (p = 0.016). These subjects have increased risk for fetal growth restriction, lower birth weight, lower Apgar scores, acidosis, and severe intraventricular hemorrhage and/or death (p < 0.05). Conclusion: Abnormal cerebroplacental ratio and umbilical artery pulsatility index are associated with postnatal impairment in cerebral autoregulation and adverse outcome.

Original languageEnglish (US)
Pages (from-to)474-481
Number of pages8
JournalJournal of Perinatology
Issue number5
StatePublished - May 1 2018

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© 2018 Nature America, Inc., part of Springer Nature.


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