Results 71 to 80 of about 3,313,018 (220)

History of Brain Injury Alters Cerebral Haemodynamic Oscillations with Cardiac Influence

Brain Sciences, 2022
(1) Background: Cerebral autoregulation is altered during acute mild traumatic brain injury, or concussion. However, it is unknown how a history of concussion can impact cerebral haemodynamic activity during a task that elicits an autoregulatory response.
J. Patrick Neary, Jyotpal Singh, Luke W. Sirant, Catherine A. Gaul, Steve Martin, Lynneth Stuart-Hill, Darren G. Candow, Cameron S. Mang, Gregory P. Kratzig   +8 more
doaj   +1 more source

No difference in mean middle cerebral artery blood velocity responses between lower‐ and upper‐body unilateral resistance exercise in untrained individuals

Experimental Physiology, EarlyView.
Abstract Dynamic resistance exercise (RE) produces sinusoidal fluctuations in blood pressure that are mirrored by middle cerebral artery blood velocity (MCAv). However, whether lower‐ or upper‐body RE elicits a differential cerebrovascular response has not yet been examined.
Stephanie Korad, Toby Mündel, Blake G. Perry   +2 more
wiley   +1 more source

Detection of cerebral autoregulation by near-infrared spectroscopy in neonates: performance analysis of measurement methods [PDF]

, 2012
Cerebral Autoregulation, in clinical practice, is assessed by means of correlation or coherence analysis between mean arterial blood pressure (MABP) and cerebral blood flow (CBF).
Van Huffela, Sabine, van Bel, Frank, Wolf, Martin, Lemmers, Petra, Caicedo, Alexander, Naulaers, Gunnar, Caicedo Dorado, Alexander, Van Huffel, Sabine   +7 more
core   +1 more source

Impaired dynamic cerebral autoregulation and cerebrovascular reactivity in middle cerebral artery stenosis. [PDF]

PLoS ONE, 2014
PURPOSE: We sought to investigate the capacity of cerebral autoregulation and cerebrovascular reactivity (CVR) in patients with middle cerebral artery (MCA) stenosis.
Jie Chen, Jia Liu, Wei-Hai Xu, Ren Xu, Bo Hou, Li-Ying Cui, Shan Gao   +6 more
doaj   +1 more source

Cerebrovascular flow‐mediated dilation in humans: Methodological challenges, physiological interpretation and future integrations

Experimental Physiology, EarlyView.
Abstract Arterial shear‐mediated vasodilation is a well‐established measure of endothelial function and serves as a critical biomarker for cardiovascular disease risk. Endothelial function can be measured using a variety of experimental methodologies; however, the most widely adopted technique is ultrasound‐based flow‐mediated dilation (FMD), in which ...
Yi Zhen Bao, Tabitha V. Craig, Jenna C. McCrone, Kurt J. Smith, Michael M. Tymko   +4 more
wiley   +1 more source

Data_Sheet_1_Noninvasive Optical Measurements of Dynamic Cerebral Autoregulation by Inducing Oscillatory Cerebral Hemodynamics.PDF

, 2021
Objective: Cerebral autoregulation limits the variability of cerebral blood flow (CBF) in the presence of systemic arterial blood pressure (ABP) changes.
Sergio Fantini (389967), Xuemei Cai (3617636), Cristianne Fernandez (9775055), Angelo Sassaroli (389966), Steve Bibu (11712011), Kristen Tgavalekos (6325436), Thao Pham (742506), Joshua Kornbluth (11712014), Giles Blaney (9775052)   +8 more
core   +1 more source

Whole‐body hot water immersion effect on cerebral haemodynamics and subsequent cerebrovascular reactivity to carbon dioxide

Experimental Physiology, EarlyView.
Abstract To test the hypothesis that hot water immersion (HWI) improves cerebrovascular function via shear‐mediated mechanisms, this study determined cerebrovascular reactivity to carbon dioxide (CVRCO2${\mathrm{CV}}{{\mathrm{R}}_{{\mathrm{C}}{{\mathrm{O}}_2}}}$) before and after 60 min of 39°C HWI and a 21°C air control (CON) in 15 healthy ...
Samuel F. Leaney, Ester Tommasini, Guto W. Hughes, Alison M. Shepherd, Nyah D. Kingdon, Justin S. Lawley, Geoff B. Coombs, Jonathan P. Moore, Samuel J. Oliver   +8 more
wiley   +1 more source

Dynamic Cerebral Autoregulation in Carotid Stenosis Before and After Carotid Stenting

, 2009
Background and Purpose: Impaired dynamic cerebral autoregulation (DCA) has been shown in patients with severe (≥70%) internal carotid artery (ICA) stenosis, but DCA in moderate (50%-69%) ICA stenosis especially its response to carotid revascularization ...
TANG, SUNG-CHUN;HUANG, YU-WEN;HUANG, SHENG-JEAN;SHIEH, JIANN-SHING;YIP, PING-KEUNG;JENG, JIANN-SHING, 湯頌君;黃郁文;黃勝堅;謝建興;葉炳強;鄭建興   +1 more
core   +1 more source

Lipopolysaccharide infusion enhances dynamic cerebral autoregulation without affecting cerebral oxygen vasoreactivity in healthy volunteers [PDF]

, 2013
INTRODUCTION: Sepsis may be associated with disturbances in cerebral oxygen transport and cerebral haemodynamic function, thus rendering the brain particularly susceptible to hypoxia.
Holstein-Rathlou, Niels-Henrik, Plovsing, Ronni R, Christiansen, Claus B, Møller, Kirsten, Berg, Ronan M G, Bailey, Damian M, Evans, Kevin A   +6 more
core   +1 more source

Carotid sinus baroafferent signals contribute to cerebral blood flow regulation during acute hypotension in young males: A randomized crossover study

Physiological Reports
Cerebral autoregulation is an important factor in prevention of cerebral ischemic events. We tested a traditional but unproven hypothesis that carotid sinus baroafferent signals contribute to dynamic cerebral autoregulation.
Kei Ishii, Tsubasa Izaki, Ryota Asahara, Hidehiko Komine   +3 more
doaj   +1 more source