Results 71 to 80 of about 276,086 (232)

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

Cerebral and peripheral haemodynamics at rest and in response to orthostasis during 3 days of simulated heatwave

Experimental Physiology, EarlyView.
Abstract Acute heat stress reduces cerebral haemodynamics and orthostatic tolerance. However, the haemodynamic response to orthostasis during prolonged heat stress typical of heatwaves is unknown. We hypothesised that thermoregulatory‐induced elevations in peripheral haemodynamics during 3 days of simulated heatwave would exacerbate orthostatic‐induced
Alexander T. Friend, Samuel J. Oliver, Lydia L. Simpson, Carmen Possnig, Gabriella M. K. Rossetti, Jason T. Fisher, Lydia Tsoutsoubi, Konstantinos Mantzios, Urša Ciuha, Leonidas G. Ioannou, Igor B. Mekjavic, Justin S. Lawley   +11 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

Increasing paced heart rate reduces cerebral pulsatility

Experimental Physiology, EarlyView.
Abstract Cerebral pulsatility is a key index of cerebral haemodynamics, a central determinant of intravascular shear stress within intracranial vessels, and is associated with cerebral small vessel disease. It increases with a spontaneously falling heart rate, but the effect of altering heart rates on cerebral haemodynamics is unknown.
A. J. S. Webb, J. Thomas, O. Llwyd, N. Herring   +3 more
wiley   +1 more source

The role of acid‐base balance in cerebrovascular and ventilatory responses to CO2 during 10 h normobaric hypoxia

The Journal of Physiology, EarlyView.
Abstract figure legend During 10 h exposures to normobaric hypoxia exposure there was a selective leftward shift in ventilatory response to hyperoxic hypercapnic rebreathing, but not the cerebrovascular response. The key findings are that the resetting of the central chemoreflex to lower PCO2${P_{{\mathrm{C}}{{\mathrm{O}}_2}}}$ during early hypoxic ...
Holly Barclay, Saptarshi Mukerji, Bengt Kayser, Jui‐Lin Fan   +3 more
wiley   +1 more source

Transcranial Doppler Versus CT-Angiography for Detection of Cerebral Vasospasm in Relation to Delayed Cerebral Ischemia After Aneurysmal Subarachnoid Hemorrhage:A Prospective Single-Center Cohort Study: The Transcranial doppler and CT-angiography for Investigating Cerebral vasospasm in Subarachnoid hemorrhage (TACTICS) study [PDF]

, 2019
Cerebral vasospasm in the first 2 weeks after aneurysmal subarachnoid hemorrhage is recognized as a major predictor of delayed cerebral ischemia. The routine screening for cerebral vasospasm with either transcranial Doppler or CT angiography has been ...
Omid S. Eshghi, Bokkers, Reinoud P H; id_orcid, Rob J.M. Groen, Mazuri, Aryan, Reinoud P.H. Bokkers, Maarten Uyttenboogaart, Elting, Jan Willem J, Groen, Rob J M; id_orcid, Jan Willem J. Elting, J. Joep van der Harst, van der Harst, J Joep; id_orcid, Aryan Mazuri, Walter M. van den Bergh, Jan D.M. Metzemaekers, Metzemaekers, Jan D M, J. Marc C. van Dijk, van Dijk, J Marc C; id_orcid, van den Bergh, Walter M; id_orcid, Luijckx, Gert-Jan R, Gert-Jan. R. Luijckx, Eshghi, Omid S, Uyttenboogaart, Maarten; id_orcid   +21 more
core   +1 more source

Transcranial Doppler Ultrasound, a Review for the Pediatric Intensivist

, 2022
The use of transcranial Doppler ultrasound (TCD) is increasing in frequency in the pediatric intensive care unit. This review highlights some of the pertinent TCD applications for the pediatric intensivist, including evaluation of cerebral hemodynamics ...
Lovett, Marlina Elizabeth, O’Brien, Nicole F., Nicole F. O’Brien, Marlina Elizabeth Lovett   +3 more
core   +1 more source

Arterial–venous differences of brain‐derived neurotrophic factor isoforms across the brain and muscle after exercise at different intensities

The Journal of Physiology, EarlyView.
Abstract figure legend Exercise‐induced increases in forearm venous plasma and serum brain‐derived neurotrophic factor (BDNF) are often assumed to be indicative of release from the brain. Sixteen healthy and physically fit adults (20–40 years old) were recruited to investigate whether exercise‐induced changes in forearm venous mature BDNF (mBDNF) and ...
Olga Tarassova, Yiwen Jiang, Helena Wallin, Mats Jensen‐Urstad, Nikola Drca, Julia Röja, Marjan Pontén, Abram Katz, Jonna Nilsson, Maria M. Ekblom, Marcus Moberg   +10 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

Ventilatory and cerebrovascular responses to exercise in lowlander children acclimatizing to high‐altitude

The Journal of Physiology, EarlyView.
Abstract figure legend To investigate age‐related differences in ventilatory and cerebrovascular responses to exercise at high‐altitude, adults (n = 10, 23–44 years) and children (n = 8, 7–14 years) completed progressive cycling exercise tests at sea‐level and following 6 days of acclimatization at 3800 m.
J. L. Koep, M. G. Rieger, K. J. Smith, G. R. DuManoir, C. M. Tallon, D. R. Perkins, S. Piombo, M. Stembridge, D. M. Cooper, S. Radom‐Aizik, P. N. Ainslie, A. M. McManus   +11 more
wiley   +1 more source