Comparative Study of Novel Noninvasive Cerebral Autoregulation Volumetric Reactivity Indices Reflected by Ultrasonic Speed and Attenuation as Dynamic Measurements in the Human Brain.

Basant K Bajpai, Rolandas Zakelis, Mantas Deimantavicius, Daiva Imbrasiene

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In one paragraph

Article in Brain sciences, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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5 · Who and what money

Authors and funding

4 authors.

Basant K BajpaiHealth Telematics Science Institute, Kaunas University of Technology, LT-51423 Kaunas, Lithuania.ORCID 0000-0002-7035-8740

Rolandas ZakelisHealth Telematics Science Institute, Kaunas University of Technology, LT-51423 Kaunas, Lithuania.

Mantas DeimantaviciusHealth Telematics Science Institute, Kaunas University of Technology, LT-51423 Kaunas, Lithuania.

Daiva ImbrasieneDepartment of Health Promotion and Rehabilitation, Lithuanian Sports University, LT-44221 Kaunas, Lithuania.ORCID 0000-0002-0226-972X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This is a comparative study of two novel noninvasive cerebrovascular autoregulation (CA) monitoring methods based on intracranial blood volume (IBV) changes in the human brain. We investigated the clinical applicability of the new volumetric reactivity index (VRx2), reflected by intracranial ultrasonic attenuation dynamics for noninvasive CA monitoring. The CA was determined noninvasively on 43 healthy participants by calculating the volumetric reactivity index (VRx1 from time-of-flight of ultrasound, VRx2 from attenuation of ultrasound). The VRx was calculated as a moving correlation coefficient between the arterial blood pressure and noninvasively measured IBV slow waves. Linear regression between VRx1 and VRx2 (averaged per participants) showed a significant correlation (

Indexed as

ABP = arterial blood pressureCA = cerebrovascular autoregulationCBF = cerebral blood flowCPP = cerebral perfusion pressureICP = intracranial pressurePRx = pressure reactivity indexTOF = time-of-flightVRx = volumetric reactivity index

Identifiers

PMID32244750

DOI10.3390/brainsci10040205

PMCPMC7226251

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.