Results 21 to 30 of about 32,185 (293)

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

Contrasting Measures of Cerebrovascular Reactivity Between MRI and Doppler: A Cross-Sectional Study of Younger and Older Healthy Individuals

, 2021
Cerebrovascular reactivity (CVR) is used as an outcome measure of brain health. Traditionally, lower CVR is associated with ageing, poor fitness and brain-related conditions (e.g. stroke, dementia).
Mullinger, Karen J., Lucas, Samuel J E, Thomas, Kate N., Francis, Susan T, Mullinger, Karen; id_orcid, Whittaker, Anna; id_orcid, Francis, Susan T., Thomas, Kate N, Burley, Claire, Francis, Susan, Burley, Claire V, Lucas, Samuel J.E., Mullinger, Karen J, Burley, Claire V., Whittaker, Anna C, Lucas, Sam; id_orcid, Whittaker, Anna C.   +16 more
core   +1 more source

Impaired endothelium-mediated cerebrovascular reactivity promotes anxiety and respiration disorders in mice [PDF]

, 2020
Carbon dioxide (CO$_{2}$), the major product of metabolism, has a strong impact on cerebral blood vessels, a phenomenon known as cerebrovascular reactivity.
et al, Hansen, Cathrin E, Wenzel, Jan; https://orcid.org/, Bettoni, Carla   +3 more
core   +2 more sources

Neuroimaging assessment of cerebrovascular reactivity in concussion: current concepts, methodological considerations and review of the literature

Frontiers in Neurology, 2016
Concussion is a form of traumatic brain injury (TBI) that presents with a wide spectrum of subjective symptoms and few objective clinical findings. Emerging research suggests that one of the processes that may contribute to concussion pathophysiology is ...
Michael John Ellis, Michael John Ellis, Lawrence eRyner, Lawrence eRyner, Olivia eSobczyk, Olivia eSobczyk, Jorn eFierstra, David eMikulis, David eMikulis, Joseph Arnold Fisher, Joseph Arnold Fisher, James eDuffin, James eDuffin, W. Alan C. Mutch, W. Alan C. Mutch   +14 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
openaire   +2 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
openaire   +2 more sources

Rapid cerebrovascular reactivity mapping: Enabling vascular reactivity information to be routinely acquired [PDF]

, 2017
Cerebrovascular reactivity mapping (CVR), using magnetic resonance imaging (MRI) and carbon dioxide as a stimulus, provides useful information on how cerebral blood vessels react under stress.
Bulte, Daniel P., Blockley, NP, Daniel P. Bulte, Harkin, James W., Nicholas P. Blockley, Bulte, Daniel P, Blockley, Nicholas P., Blockley, Nicholas, James W. Harkin, Harkin, JW, Bulte, DP, Harkin, James W   +11 more
core   +1 more source

Temporal relationship between vasopressor and sedative administration and cerebrovascular response in traumatic brain injury: a time-series analysis

Intensive Care Medicine Experimental, 2023
Background Although vasopressor and sedative agents are commonly used within the intensive care unit to mediate systemic and cerebral physiology, the full impact such agents have on cerebrovascular reactivity remains unclear.
Logan Froese, Alwyn Gomez, Amanjyot Singh Sainbhi, Nuray Vakitbilir, Izabella Marquez, Fiorella Amenta, Kevin Y. Stein, Frederick A. Zeiler   +7 more
doaj   +1 more source

Older Adults With Higher Blood Pressure Variability Exhibit Cerebrovascular Reactivity Deficits [PDF]

, 2023
BACKGROUND: Elevated blood pressure (BP) variability is predictive of increased risk for stroke, cerebrovascular disease, and other vascular brain injuries, independent of traditionally studied average BP levels.
Nguyen, Amy, Mather, Mara, Alitin, John Paul M, Li, Yanrong, Blanken, Anna E, Yew, Belinda, Sible, Isabel J, Wang, Danny J, Rodgers, Kathleen E, Jang, Jung Yun, Shenasa, Fatemah, Kapoor, Arunima, Shao, Xingfeng, Marshall, Anisa J, Nation, Daniel A, Dutt, Shubir, Ho, Jean K, Sturm, Virginia E, Gaubert, Aimée   +18 more
core   +1 more source