Results 11 to 20 of about 32,185 (293)

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

Abnormal Cerebrovascular Reactivity in Patients with Parkinson’s Disease [PDF]

Parkinson's Disease, 2015
Background. Orthostatic hypotension (OH) is an important nonmotor manifestation of Parkinson’s disease (PD). Changes in cerebrovascular reactivity may contribute to this manifestation and can be monitored using transcranial Doppler. Objective.
Carlos Henrique Ferreira Camargo, Eduardo Antunes Martins, Marcos Christiano Lange, Henrique Alvaro Hoffmann, Jissa Jeanete Luciano, Marcelo Rezende Young Blood, Marcelo Derbli Schafranski, Marcelo Machado Ferro, Edmar Miyoshi   +8 more
doaj   +3 more sources

Cerebrovascular Pressure Reactivity in Children with TBI

Pediatric Neurology Briefs, 2015
Investigators from University of Melbourne, Australia, studied Pressure-Reactivity Index (PRx) and optimal Cerebral Perfusion Pressure (CPP) in 36 children aged between 6 months and 16 years treated for traumatic brain injury (TBI) at the Royal Children ...
Laurence Ducharme-Crevier
doaj   +5 more sources

The dependence of CO₂ cerebrovascular reactivity (CVR) on caffeine. [PDF]

Imaging Neurosci (Camb)
Abstract Cerebrovascular reactivity (CVR) represents an important marker of brain vascular health, particularly in the context of small and large vessel diseases. However, an undesired feature of this measure is that there exist large variations in CVR values across individuals, which is mainly attributed to physiological factors.
Sankaralayam DS, Xu C, Hu Z, Moghekar A, Jiang D, Hu C, Liu P, Lu H.   +7 more
europepmc   +4 more sources

Incomplete circle of Willis and cerebrovascular reactivity in asymptomatic patients before and after carotid endarterectomy [PDF]

Srpski Arhiv za Celokupno Lekarstvo, 2021
Introduction/Objective. Circle of Willis (CoW) provides the most significant collateral flow in the presence of significant stenosis or occlusion of internal carotid artery.
Manojlović Vladimir, Milošević Đorđe, Budakov Nebojša, Nikolić Dragan   +3 more
doaj   +1 more source

Impact of Age and Biological Sex on Cerebrovascular Reactivity in Adult Moderate/Severe Traumatic Brain Injury: An Exploratory Analysis

Neurotrauma Reports, 2021
Age and biological sex are two potential important modifiers of cerebrovascular reactivity post-traumatic brain injury (TBI) requiring close evaluation for potential subgroup responses.
Carleen Batson, Logan Froese, Alwyn Gomez, Amanjyot Singh Sainbhi, Kevin Y. Stein, Arsalan Alizadeh, Frederick A. Zeiler   +6 more
doaj   +1 more source

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

The Impact of Vasopressor and Sedative Agents on Cerebrovascular Reactivity and Compensatory Reserve in Traumatic Brain Injury: An Exploratory Analysis

Neurotrauma Reports, 2020
The impact of vasopressor and sedative drugs on cerebrovascular reactivity in traumatic brain injury (TBI) remains unclear. The aim of this study was to evaluate the impact of changes of doses of commonly administered sedation (i.e., propofol, fentanyl ...
Logan Froese, Joshua Dian, Carleen Batson, Alwyn Gomez, Norah Alarifi, Bertram Unger, Frederick A. Zeiler   +6 more
doaj   +1 more source