Results 61 to 70 of about 6,002 (230)

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

Spontaneous Nonaneurysmal Subarachnoid Hemorrhage: Review of 75 Cases

Nepal Journal of Neuroscience, 2005
The primary objective of this study was to describe the clinical, radiological, and transcranial Doppler (TCD) ultrasonography characteristics of patients with spontaneous, nonaneurysmal subarachnoid hemorrhage (SNSAH), and analyze their short- term ...
Mohan R. Sharma , Gerald A. Grant , Heather A. Nicoletto , Colleen M. Douville , David W. Newell   +4 more
doaj   +1 more source

Detection of cerebral vasculopathy in sickle cell disease using transcranial Doppler ultrasonography and magnetic resonance imaging. Case report.

, 1988
We describe a case of homozygous sickle cell anemia in which noninvasive transcranial Doppler ultrasonography and magnetic resonance imaging were used to detect angiographically documented occlusive lesions of intracranial arteries.
T el Gammal, F T Nichols, V McKie, R J Adams, R Aaslid   +4 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

Grading and hemodynamic follow-up study of arteriovenous malformations with transcranial Doppler ultrasonography

, 1998
This study presents and tests the clinical validity of a hemodynamic grading system that depends on noninvasive transcranial Doppler ultrasonographic parameters.

core   +2 more sources

Diagnostic significance of transcranial Doppler ultrasonography in patients with subarachnoid hemorrhage and cerebral vasospasm [PDF]

Kosin Medical Journal
Background This study investigated the accuracy and usefulness of transcranial Doppler (TCD) ultrasonography as a diagnostic method in patients with subarachnoid hemorrhage (SAH) and cerebral vasospasm.
Jung Hyun Park
doaj   +1 more source

A comparison of normobaric and hypobaric hypoxia effects on cerebrovascular response pre and post maximal exercise

Experimental Physiology, EarlyView.
Abstract A lack of consensus remains on whether normobaric hypoxia (NH) and hypobaric hypoxia (HH) may differentially impact physiological factors affecting cerebrovascular regulation, particularly with an additional strenuous exercise component. We sought to compare the acute effects of NH and HH on global cerebral blood flow (gCBF) at an altitude ...
Rachel Turner, Giovanni Vinetti, Giacomo Strapazzon, Hannes Gatterer   +3 more
wiley   +1 more source

Evaluation of Cerebral Blood Flow Alterations and Acute Neuronal Damage due to Water-Pipe Smoking

Balkan Medical Journal, 2019
Background:Although water-pipe smoking is a great public health problem, data regarding the acute and chronic effects and the degree of toxin exposure are limited.
Onur Karakayalı, Uygar Utku, Serkan Yılmaz   +2 more
doaj   +1 more source

Role of Transcranial Doppler Ultrasonography in Detecting and Excluding Ischemic Stroke in the Emergency Department: A Prospective Observational Study [PDF]

Introduction: To determine whether color doppler ultrasonography (CDUS) and transcranial Doppler ultrasonography (TCD) can be used as an alternative test to cranial computed tomography angiography (CTA) by detecting vascular occlusions at the bedside in ...
Akpinar, Erhan, Ozdamar, Yasemin, Arsava, Ethem Murat, Agackiran, Ilter, Agackiran, Merve, Karaca, Mehmet Ali, Demir, Mehmet Cihat   +6 more
core   +1 more source

CARE‐ing for concussions: Development of the Calgary Adapted aRm Ergometer (CARE) exertion test: A physiological alternative to the Calgary Concussion Cycle Test

Experimental Physiology, EarlyView.
Abstract Aerobic exercise testing helps facilitate recovery post‐concussion. Current protocols (Calgary Concussion Cycling Test: CCCT) are inaccessible for athletes with lower‐body impairments (i.e. Para athletes). This study compared physiological parameters for a novel arm crank test, the Calgary Adapted aRm Ergometer (CARE) test, with the CCCT ...
Jonathan D. Smirl, Joshua J. Burkart, Matthew G. Neill, Jean‐Michel Galarneau, Elizabeth K. S. Fletcher, Joel S. Burma, Nathan E. Johnson, John J. Leddy, Mohammad N. Haider, William M. Adams, Cheri Blauwet, Chantel T. Debert, Carolyn A. Emery   +12 more
wiley   +1 more source