Preprint Case Report Version 1 Preserved in Portico This version is not peer-reviewed

Noninvasive Optical Monitoring of Cerebral Blood Flow and EEG Spectral Responses after Severe Traumatic Brain Injury: A Case Report

Version 1 : Received: 13 July 2021 / Approved: 14 July 2021 / Online: 14 July 2021 (15:19:40 CEST)

How to cite: Poon, C.; Rinehart, B.; Langri, D.S.; Rambo, T.M.; Miller, A.J.; Foreman, B.; Sunar, U. Noninvasive Optical Monitoring of Cerebral Blood Flow and EEG Spectral Responses after Severe Traumatic Brain Injury: A Case Report. Preprints 2021, 2021070340 (doi: 10.20944/preprints202107.0340.v1). Poon, C.; Rinehart, B.; Langri, D.S.; Rambo, T.M.; Miller, A.J.; Foreman, B.; Sunar, U. Noninvasive Optical Monitoring of Cerebral Blood Flow and EEG Spectral Responses after Severe Traumatic Brain Injury: A Case Report. Preprints 2021, 2021070340 (doi: 10.20944/preprints202107.0340.v1).

Abstract

Survivors of severe brain injury may require care in a neurointensive care unit (neuro-ICU), where the brain is vulnerable to secondary brain injury. Thus, there is a need for noninvasive, bedside, continuous cerebral blood flow monitoring approaches in the neuro-ICU. Our goal is to address this need through combined measurements of EEG and functional optical spectroscopy (EEG-Optical) instrumentation and analysis to provide a complementary fusion of data about brain activity and function. The present case demonstrates in a patient with traumatic brain injury, noninvasive cerebral blood flow transients can be recorded that correlate with gold-standard invasive measurements and with the frequency content changes in the EEG data during clinical care.

Keywords

cerebral blood flow and oxygenation; diffuse correlation spectroscopy; EEG; traumatic brain in-jury; neurointensive care unit; neuromonitoring

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