Results 61 to 70 of about 23,457 (242)

PATTERN OF CEREBRAL BLOOD FLOW VELOCITY USING TRANSCRANIAL DOPPLER ULTRASONOGRAPHY IN CHILDREN WITH SICKLE CELL DISORDER IN LAGOS STATE, NIGERIA

Mediterranean Journal of Hematology and Infectious Diseases, 2017
Cerebrovascular accident (CVA) is a common devastating neurological complication of sickle cell disorder (SCD) with a high recurrent and mortality rate.
Motunrayo Oluwabukola Adekunle
doaj   +1 more source

Hemodynamic changes of severe carotid atheromatosis pre and post endarterectomy in the case of a coronary patient with ischemic stroke [PDF]

Romanian Journal of Neurology, 2013
Nearly 25%-30% of ischemic strokes are due to atherosclerosis of the carotid bifurcation. Cerebrovascular reactivity (CVR) is an indicator for testing hemodynamic status of cerebral circulation.
Marius Militaru, Anda Militaru, Stanca Ples, Gratian Miclaus, Mihaela Simu, Daniel Lighezan   +5 more
doaj   +1 more source

Linking dynamic cerebral autoregulation and inhibitory executive function: Role of modifiable behaviours

Experimental Physiology, EarlyView.
Abstract Dynamic cerebral autoregulation (dCA) stabilises cerebral blood flow (CBF) against rapid fluctuations in perfusion pressure and may serve as a key physiological mediator of cognitive function. Inhibitory executive function, a core domain essential for goal‐directed behaviour, is influenced by modifiable lifestyle factors such as physical ...
Hayato Tsukamoto, Damian M. Bailey
wiley   +1 more source

Determination of hemispheric dominance with mental rotation using functional transcranial Doppler sonography and FMRI

, 2010
the aim of this study was to investigate specific activation patterns and potential gender differences during mental rotation and to investigate whether functional magnetic resonance imaging (fMRI) and functional transcranial Doppler sonography (fTCD ...
Johannes T. Heverhagen, Karl Martin Klein, Anke Hermsen, Rosenow, Felix, Susanne Knake, Felix Rosenow, Hattemer, Katja, Heverhagen, Johannes T, Klein, Karl Martin, Plate, Annika, Keil, Boris, Wolfgang H. Oertel, Haag, Anja, Knake, Susanne, Hermsen, Anke, Oertel, Wolfgang H, Anja Haag, Annika Plate, Hamer, Hajo M, Boris Keil, Katja Hattemer, Hajo M. Hamer   +21 more
core   +1 more source

Time‐course analysis of cerebral circulation and cardiorespiratory responses to acute central blood volume reduction in healthy young males

Experimental Physiology, EarlyView.
Abstract Central blood volume (CBV) reduction challenges circulatory and respiratory homeostasis, particularly during the initial compensatory phase (0–2 min), when rapid physiological adaptations occur. In this study, we examined dynamic cardiorespiratory responses to CBV reduction using lower‐body negative pressure (LBNP) in 11 healthy young males ...
Marina Feeley, Tomoki Watada, Go Ito, Ai Shimada, Toru Sawai, Hideomi Nakata, Shingo Otsuki, Tadayoshi Miyamoto   +7 more
wiley   +1 more source

Reproducibility of Transcranial Doppler ultrasound in the middle cerebral artery

Cardiovascular Ultrasound, 2018
Background Transcranial Doppler ultrasound remains the only imaging modality that is capable of real-time measurements of blood flow velocity and microembolic signals in the cerebral circulation.
Jakub Kaczynski, Rachel Home, Karen Shields, Matthew Walters, William Whiteley, Joanna Wardlaw, David E. Newby   +6 more
doaj   +1 more source

Cerebral haemodynamic responses to inspiratory muscle work

Experimental Physiology, EarlyView.
Abstract Fatiguing inspiratory work has been shown to evoke a sympathetically mediated reflex that has systemic cardiovascular consequences, including increases in heart rate and blood pressure and a decrease in resting limb vascular conductance. Moreover, the response to this reflex appears to be attenuated in females compared with males.
Andrew H. Ramsook, Morgan A. Hughes, Wyatt W. Pruter, Kevin L. Webb, Ali Ataie, Chad C. Wiggins, Gabrielle A. Dillon, Sarah E. Baker, Michael J. Joyner   +8 more
wiley   +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

Transcranial Doppler ultrasound to assess cerebrovascular reactivity: reliability, reproducibility and effect of posture [PDF]

, 2013
Transcranial Doppler ultrasound (TCD) allows measurement of blood flow velocities in the intracranial vessels, and can be used to assess cerebral vasodilator responses to a hypercapnic stimulus. The reliability of this technique has not been established,
Mark A. Cutting, Jonathan D. Buckley, McDonnell, Michelle N., Michelle N. McDonnell, Berry, N., Peter R.C. Howe, Buckley, J., Keage, Hannah A., Hannah A. Keage, Howe, Peter R. C., Buckley, Jonathan D., Keage, H., McDonnell, M., Howe, P., Cutting, Mark A., Narelle M. Berry, Cutting, M., Berry, Narelle M.   +17 more
core   +1 more source

Sex differences in cerebral blood flow and cardiac function in response to exercise in the heat

Experimental Physiology, EarlyView.
Abstract We investigated the effect of exercising in hot conditions on cerebral blood flow and systolic left ventricular (LV) function in males and females, to explore sex differences. The experimental condition consisted of walking on a treadmill at 5 km/h and 2% incline, inside a heat chamber at 40°C (50% relative humidity), for 90 min.
João Carlos Locatelli, Juliene G. Costa, Kristanti W. Wigati, Jesse L. Criddle, Julie J. Collis, Xingwei Xu, Louise H. Naylor, Howard H. Carter, Shane K. Maloney, Robert A. McLaughlin, Andrew Haynes, Helen Jones, Keith George, Daniel J. Green   +13 more
wiley   +1 more source