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Cerebrovascular Resistance: The Basis of Cerebrovascular Reactivity [PDF]

Frontiers in Neuroscience, 2018
The cerebral vascular network regulates blood flow distribution by adjusting vessel diameters, and consequently resistance to flow, in response to metabolic demands (neurovascular coupling) and changes in perfusion pressure (autoregulation).
James Duffin, James Duffin, Olivia Sobczyk, Larissa McKetton, Adrian Crawley, Julien Poublanc, Lashmi Venkatraghavan, Kevin Sam, W. Alan Mutch, David Mikulis, David Mikulis, David Mikulis, Joseph A. Fisher, Joseph A. Fisher, Joseph A. Fisher   +14 more
doaj   +3 more sources

Impaired Cerebrovascular Reactivity in Huntington’s Disease [PDF]

Frontiers in Physiology, 2021
There is increasing evidence that impairments of cerebrovascular function and/or abnormalities of the cerebral vasculature might contribute to early neuronal cell loss in Huntington’s disease (HD).
Suk Tak Chan, Nathaniel D. Mercaldo, Kenneth K. Kwong, Steven M. Hersch, Herminia D. Rosas, Herminia D. Rosas   +5 more
doaj   +3 more sources

Evaluation of cerebrovascular reactivity using transcranial Doppler in patients with influenza. [PDF]

PLoS ONE
Influenza is primarily a respiratory disease but can cause a broad spectrum of complications, including those affecting the cerebrovascular system. The aim of this study was to evaluate cerebrovascular reactivity in patients during and after influenza ...
Ana Orsolic Beslic, Kresimir Caljkusic, Antonela Matana, Katarina Tomelic Ercegovic, Mirela Pavicic Ivelja   +4 more
doaj   +2 more sources

Abnormal Cerebrovascular Reactivity in Parkinson’s Disease [PDF]

Parkinson's Disease, 2015
We read with great interest the recent original article by Camargo et al. [1] titled “Abnormal Cerebrovascular Reactivity in Patients with Parkinson's Disease.” Authors observed that patients with Parkinson's disease (PD) have impaired cerebrovascular reactivity (CVR) as compared to those without orthostatic hypotension (OH) and to the control subjects.
Kiran Prakash
doaj   +3 more sources

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   +3 more sources

Cerebrovascular reactivity in migraine: a breath-hold BOLD fMRI study [PDF]

The Journal of Headache and Pain
Background and objectives Prior studies assessing cerebrovascular reactivity (CVR) in participants with migraine primarily utilized Doppler ultrasonography and focused on large vascular territories due to limitations of available technology.
Adam S. Sprouse Blum, Richard Watts, Scott G. Hipko, Jay V. Gonyea, Anna E. Senft-Miller, Olivia K. Nop, Julie A. Dumas, Robert E. Shapiro, Benjamin Littenberg, Bruno P. Soares, Lauren A. DaSilva, James B. Allison, Josh E. Furlonge, Jiming Zhang   +13 more
doaj   +2 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

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

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