Novel Wavelet Real Time Analysis of Neurovascular Coupling in Neonatal Encephalopathy.

ABSTRACT: Birth asphyxia constitutes a major global public health burden for millions of infants, despite hypothermia therapy. There is a critical need for real time surrogate markers of therapeutic success, to aid in patient selection and/or modification of interventions in neonatal encephalopathy (NE). This is a proof of concept study aiming to quantify neurovascular coupling (NVC) using wavelet analysis of the dynamic coherence between amplitude-integrated electroencephalography (aEEG) and near-infrared spectroscopy in NE. NVC coupling is assessed by a wavelet metric estimation of percent time of coherence between NIRS S_ctO₂ and aEEG for 78?hours after birth. An abnormal outcome was predefined by a Bayley III score <85 by 18-24?m. We observed high coherence, intact NVC, between the oscillations of S_ctO₂ and aEEG in the frequency range of 0.00025-0.001?Hz in the non-encephalopathic newborns. NVC coherence was significantly decreased in encephalopathic newborns who were cooled vs. non-encephalopathic controls (median IQR 3[2-9] vs.36 [33-39]; p?

SUBMITTER: Chalak LF 

PROVIDER: S-EPMC5385531 | biostudies-literature | 2017 Apr

REPOSITORIES: biostudies-literature