Results 21 to 30 of about 29,744 (154)

Non-Invasive Continuous Cerebrovascular Monitoring for Subacute Bedside and Outpatient Settings: An Important Advancement

Neurotrauma Reports, 2021
Dear Editor: We read with great interest the recent publication in the journal by Khan and colleagues, from the University of Cambridge, regarding the application of robotic transcranial Doppler (TCD) for continuous and entirely non-invasive ...
Alwyn Gomez, Frederick A. Zeiler
doaj   +1 more source

Statistical properties of cerebral near infrared and intracranial pressure-based cerebrovascular reactivity metrics in moderate and severe neural injury: a machine learning and time-series analysis

Intensive Care Medicine Experimental, 2023
Background Cerebrovascular reactivity has been identified as a key contributor to secondary injury following traumatic brain injury (TBI). Prevalent intracranial pressure (ICP) based indices of cerebrovascular reactivity are limited by their invasive ...
Alwyn Gomez, Amanjyot Singh Sainbhi, Kevin Y. Stein, Nuray Vakitbilir, Logan Froese, Frederick A. Zeiler   +5 more
doaj   +1 more source

Practical Considerations for Continuous Time-Domain Cerebrovascular Reactivity Indices in Traumatic Brain Injury: Do Scaling Errors in Parent Signals Matter?

Frontiers in Neurology, 2022
Literature pertaining to traumatic brain injury care involves the mediation and control of secondary brain injury mechanisms, chief among these is cerebral autoregulation.
Logan Froese, Alwyn Gomez, Alwyn Gomez, Amanjyot Singh Sainbhi, Trevor Slack, Frederick A. Zeiler, Frederick A. Zeiler, Frederick A. Zeiler, Frederick A. Zeiler, Frederick A. Zeiler   +9 more
doaj   +1 more source

Effect of Smoking on Cerebrovascular Reactivity [PDF]

Journal of Cerebral Blood Flow & Metabolism, 1996
Current smoking is a risk factor for stroke. The aim of this study was to evaluate the effect of smoking one cigarette on cerebral hemodynamics. Using transcranial Doppler ultrasound, we studied the changes of flow velocity after hypercapnia in the middle cerebral arteries (MCAs) of 24 healthy young smokers and 24 healthy controls matched for age and ...
M, Silvestrini, E, Troisi, M, Matteis, L M, Cupini, G, Bernardi   +4 more
openaire   +2 more sources

Transcranial Doppler Based Cerebrovascular Reactivity Indices in Adult Traumatic Brain Injury: A Scoping Review of Associations With Patient Oriented Outcomes

Frontiers in Pharmacology, 2021
Background: Disruption in cerebrovascular reactivity following traumatic brain injury (TBI) is a known phenomenon that may hold prognostic value and clinical relevance.
Alwyn Gomez, Alwyn Gomez, Logan Froese, Amanjyot Singh Sainbhi, Carleen Batson, Frederick A. Zeiler, Frederick A. Zeiler, Frederick A. Zeiler, Frederick A. Zeiler, Frederick A. Zeiler   +9 more
doaj   +1 more source

NIRS-based cerebrovascular regulation assessment: exercise and cerebrovascular reactivity [PDF]

Neurophotonics, 2017
Alterations to cerebral blood flow (CBF) have been implicated in diverse neurological conditions. Near-infrared spectroscopy (NIRS)-measured regional cerebral tissue oxygen saturation ([Formula: see text]) provides an estimate of oxygenation of interrogated cerebral volume useful in identifying variations in oxygen supply to cerebral tissue and in ...
Stephanie, Miller, Kunal, Mitra
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Measuring cerebrovascular reactivity in a hemodialysis cohort. [PDF]

Cereb Circ Cogn Behav
Introduction Cerebrovascular reactivity (CVR) can inform about cerebral vascular health and provide prognostic information on risk cerebral ischemic injury. Use of transcranial Doppler ultrasound (TCD) is a non-invasive and inexpensive method to measure CVR and often uses a stimulus of increase in arterial partial pressure of carbon dioxide (pCO2).
Seigworth C, Grassl I, Wolfgram DF.
europepmc   +3 more sources

Cerebrovascular reactivity during hypothermia and rewarming [PDF]

British Journal of Anaesthesia, 2007
Experimental evidence from a murine model of traumatic brain injury (TBI) suggests that hypothermia followed by fast rewarming may damage cerebral microcirculation. The effects of hypothermia and subsequent rewarming on cerebral vasoreactivity in human TBI are unknown.This is a retrospective analysis of data acquired during a prospective, observational
A, Lavinio, I, Timofeev, J, Nortje, J, Outtrim, P, Smielewski, A, Gupta, P J, Hutchinson, B F, Matta, J D, Pickard, D, Menon, M, Czosnyka   +10 more
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Cerebrovascular Reactivity to Acetazolamide in Stable COPD Patients. [PDF]

J Clin Med
Background: COPD patients may be prone to cerebral small vessel disease resulting in perivascular white matter lesions and consequent cognitive decline. The pathophysiological background of these observations is not completely understood. It is hypothesized that COPD may involve systemic vascular dysfunction extending to the brain.
Siró P, Szabó-Szűcs R, Dudás V, Horváth I, Fülesdi B, Vaskó A.   +5 more
europepmc   +3 more sources

Cerebrovascular reactivity and white matter integrity [PDF]

Neurology, 2016
To compare the diffusion and perfusion MRI metrics of normal-appearing white matter (NAWM) with and without impaired cerebrovascular reactivity (CVR).Seventy-five participants with moderate to severe leukoaraiosis underwent blood oxygen level-dependent CVR mapping using a 3T MRI system with precise carbon dioxide stimulus manipulation.
Kevin, Sam, Boris, Peltenburg, John, Conklin, Olivia, Sobczyk, Julien, Poublanc, Adrian P, Crawley, Daniel M, Mandell, Lakshmikumar, Venkatraghavan, James, Duffin, Joseph A, Fisher, Sandra E, Black, David J, Mikulis   +11 more
openaire   +2 more sources