Non-invasive Cerebrovascular Autoregulation Assessment Using the Volumetric Reactivity Index: Prospective Study.


Health Telematics Science Institute, Kaunas University of Technology, Kaunas, Lithuania. [Email]


This prospective study of an innovative non-invasive ultrasonic cerebrovascular autoregulation (CA) monitoring method is based on real-time measurements of intracranial blood volume (IBV) reactions following changes in arterial blood pressure. In this study, we aimed to determine the clinical applicability of a non-invasive CA monitoring method by performing a prospective comparative clinical study of simultaneous invasive and non-invasive CA monitoring on intensive care patients.


Cerebrovascular autoregulation,Non-invasive monitoring,Pressure reactivity index,Traumatic brain injury patients,Ultrasonic time-of-flight measurement method,

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