Probing Brain Oxygenation with Near Infrared Spectroscopy (NIRS) — The Role of Carbon Dioxide and Blood Pressure
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منابع مشابه
Near infrared spectroscopy evaluated cerebral oxygenation during anesthesia.
Likely, maintained organ and notably cerebral perfusion, secures rapid recovery following anesthesia. To secure cerebral blood flow (CBF) at least mean arterial pressure (MAP) and the arterial carbon dioxide tension (PaCO2) need to be considered. CBF is "autoregulated", i.e. stays more or less stable within a MAP of 50-150 mmHg, but the lower limit appears to depend on the central blood volume ...
متن کاملNoninvasive measurement of cerebral blood flow and blood oxygenation using near-infrared and diffuse correlation spectroscopies in critically brain-injured adults.
BACKGROUND This study assesses the utility of a hybrid optical instrument for noninvasive transcranial monitoring in the neurointensive care unit. The instrument is based on diffuse correlation spectroscopy (DCS) for measurement of cerebral blood flow (CBF), and near-infrared spectroscopy (NIRS) for measurement of oxy- and deoxy-hemoglobin concentration. DCS/NIRS measurements of CBF and oxygena...
متن کاملIntra- and extra-cranial effects of transient blood pressure changes on brain near-infrared spectroscopy (NIRS) measurements
Brain near-infrared spectroscopy (NIRS) is an emerging neurophysiological tool that combines straightforward activity localization with cost-economy, portability and patient compatibility. NIRS is proving its empirical utility across specific cognitive and emotional paradigms. However, a potential limitation is that it is not only sensitive to haemodynamic changes taking place in the cortex, an...
متن کاملProbing Brain Oxygenation Waveforms with Near Infrared Spectroscopy (NIRS)
Alexander Gersten1, Jacqueline Perle2, Dov Heimer3, Amir Raz4 and Robert Fried5 1Department of Physics, Ben-Gurion University, Beer-Sheva 2Department of Psychology, Hunter College of the City University of New York, NY 3Pulmonary Unit, Soroka University Hospital, Beer-Sheva 4McConnell Brain Imaging Centre, Montreal Neurological Institute, McGill University, Montreal 5City University of New York...
متن کاملSimple exercises that significantly increase cerebral blood flow and cerebral oxygenation
We tested the hypothesis that simple exercises may significantly increase cerebral blood flow (CBF) and/or cerebral oxygenation. Eighteen subjects ranging in age from nineteen to thirty nine participated in a four-stage study during which measurements of end tidal CO_2 (EtCO2 by capnometer) and local brain oxygenation (by near-infrared spectroscopy (NIRS) sensor) were taken. The four stages wer...
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تاریخ انتشار 2018