Results 101 to 110 of about 710,712 (281)

Transcranial Doppler in Autonomic Testing: Standards and clinical applications

Clinical Autonomic Research, 2017
When cerebral blood flow falls below a critical limit, syncope occurs and, if prolonged, ischemia leads to neuronal death. The cerebral circulation has its own complex finely tuned autoregulatory mechanisms to ensure blood supply to the brain can meet ...
L. Norcliffe-Kaufmann, B. Galindo-Mendez, A. Garcia-Guarniz, Estibaliz Villarreal-Vitorica, V. Novak   +4 more
semanticscholar   +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

Non-invasive Monitoring of Intracranial Pressure Using Transcranial Doppler Ultrasonography: Is It Possible?

Neurocritical Care, 2016
Although intracranial pressure (ICP) is essential to guide management of patients suffering from acute brain diseases, this signal is often neglected outside the neurocritical care environment.
D. Cardim, C. Robba, M. Bohdanowicz, J. Donnelly, B. Cabella, Xiuyun Liu, M. Cabeleira, P. Smielewski, B. Schmidt, M. Czosnyka   +9 more
semanticscholar   +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

Transcranial Doppler in acute ischemic stroke and stroke-risk diseases

, 2018
This thesis covers research on the use of transcranial Doppler in ischemic stroke and stroke risk diseases, including TCD accuracy for detecting stenosis, the TIBI grade, its prognostic role and detecting of microemboli and its significance.általános ...
Finnsdóttir, Herdís
core  

Voluntary activation of human knee extensors measured using transcranial magnetic stimulation [PDF]

, 2009
The aim of this study was to determine the applicability and reliability of a transcranial magnetic stimulation twitch interpolation technique for measuring voluntary activation of a lower limb muscle group.
Ross, Emma, E. Z. Ross, Goodall, Stuart, Goodall, S., Romer, Lee, Romer, L., Romer, LM, Ross, EZ, L. M. Romer, Goodall, S, S. Goodall   +10 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

Analyzing post‐endovascular treatment stroke prognosis with transcranial Doppler and quantitative electroencephalography

Annals of Clinical and Translational Neurology
Objective Despite successful recanalization following acute ischemic stroke, patients may have a poor prognosis. We investigated whether transcranial Doppler combined with quantitative electroencephalography can identify patients with a poor prognosis at
Yajie Qi, Yingqi Xing, Qingduo Wang, Yanting Cao, Hongxiu Chen, Ying Chen   +5 more
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

Konsep Dasar Transcranial Doppler (TCD) untuk Neurocritical Care

Jurnal Neuroanestesi Indonesia, 2017
Transcranial Doppler merupakan salah satu aplikasi dari penggunaan ultrasonografi (USG) sehingga bersifat noninvasif dan mobile. Untuk dapat menggunakan TCD dengan baik maka diperlukan pemahaman mengenai doppler effect yang merupakan dasar perhitungan ...
Ida Bagus Krisna J. Sutawan, Siti Chasnak Saleh, Tatang Bisri   +2 more
doaj   +1 more source