Results 61 to 70 of about 53,414 (247)

Application of transcranial Doppler ultrasonography in cardiovascular surgery

Chinese Journal of Contemporary Neurology and Neurosurgery
The neurological complications following cardiovascular surgery can significantly affect the prognosis of patients. As a convenient and non⁃invasive intraoperative neurological monitoring method, transcranial Doppler ultrasonography (TCD) can provide ...
ZHOU Ying⁃hua, ZHANG Gui⁃tao, ZHOU Qi⁃lin, MA Ya⁃jun, LI Shu⁃juan   +4 more
doaj   +1 more source

Cerebral autoregulation in hemorrhagic stroke: A systematic review and meta‐analysis of transcranial Doppler ultrasonography studies

Journal of Clinical Ultrasound, 2018
International guidelines advocate intensive blood pressure (BP) lowering within 6 hours of acute intracerebral hemorrhage (ICH) to a target systolic BP of 130‐140 mm Hg, though more intensive lowering may be associated with adverse outcome. Observational
J. Minhas, R. Panerai, G. Ghaly, P. Divall, T. Robinson   +4 more
semanticscholar   +1 more source

Confined spaces in space: Cerebral implications of chronic elevations of inspired carbon dioxide and implications for long‐duration space travel

Experimental Physiology, EarlyView.
Abstract Cerebrovascular regulation is critically dependent upon the arterial partial pressure of carbon dioxide (PaCO2${P_{{\mathrm{aC}}{{\mathrm{O}}_{\mathrm{2}}}}}$), owing to its effect on cerebral blood flow, tissue PCO2${P_{{\mathrm{C}}{{\mathrm{O}}_{\mathrm{2}}}}}$, tissue proton concentration, cerebral metabolism and cognitive and neuronal ...
Jay M. J. R. Carr, Philip N. Ainslie, Trevor Day   +2 more
wiley   +1 more source

Transcranial Doppler Ultrasound Detection of Microemboli as a Predictor of Cerebral Events in Patients with Symptomatic and Asymptomatic Carotid Disease: A Systematic Review and Meta-Analysis. [PDF]

, 2016
OBJECTIVE: Identification of patients who will benefit from carotid endarterectomy is not entirely effective, primarily utilising degree of carotid stenosis.
Best, LM, Cheng, SF, Gurusamy, KS, Richards, T, Webb, AC   +4 more
core   +1 more source

Feasibility of superimposed supine cycling and lower body negative pressure as an effective means of prolonging exercise tolerance in individuals experiencing persisting post‐concussive symptoms: Preliminary results

Experimental Physiology, EarlyView.
Abstract To examine the feasibility, utility and safety of superimposed lower body negative pressure (LBNP) and tilt during supine cycling in individuals suffering from persisting post‐concussive symptoms (PPCS). Eleven individuals aged 17–31 (6 females/5 males) participated in two randomized separate visits, 1 week apart.
Raelyn Javra, Joel S. Burma, Nathan E. Johnson, Jonathan D. Smirl   +3 more
wiley   +1 more source

Transcranial Doppler ultrasonography in anaesthesia and intensive care [PDF]

British Journal of Anaesthesia, 2004
Transcranial Doppler ultrasonography (TCD) was introduced in 1982 by Aaslid and colleagues 5 as a non-invasive technique for monitoring blood flow velocity (FV) in the basal cerebral arteries. It is now increasingly being used in anaesthesia and intensive care for research as well as in clinical practice.
I K, Moppett, R P, Mahajan
openaire   +2 more sources

The perfect crime? : CCSVI not leaving a trace in MS [PDF]

, 2011
Background: Multiple sclerosis (MS) is a chronic, inflammatory demyelinating disease of the central nervous system, believed to be triggered by an autoimmune reaction to myelin.
Mayer, Christoph, Pfeilschifter, Waltraud, Lorenz, Matthias, Nedelmann, Max, Bechmann, Ingo Jürgen, Steinmetz, Helmuth, Ziemann, Ulf   +6 more
core   +1 more source

Effects of the angle of head‐down tilt on dynamic cerebral autoregulation during combined exposure to cephalad fluid shift and mild hypercapnia

Experimental Physiology, EarlyView.
Abstract Astronauts experience combined exposure to a cephalad fluid shift and mild hypercapnia during space missions, potentially contributing to health problems. Such combined exposure may weaken dynamic cerebral autoregulation. The magnitude of cephalad fluid shift varies between individuals, and dynamic cerebral autoregulation may be affected more ...
Tomokazu Kato, Yojiro Ogawa, Ken‐ichi Iwasaki   +2 more
wiley   +1 more source

Triptans and CGRP blockade - impact on the cranial vasculature [PDF]

, 2017
The trigeminovascular system plays a key role in the pathophysiology of migraine. The activation of the trigeminovascular system causes release of various neurotransmitters and neuropeptides, including serotonin and calcitonin gene-related peptide ...
Alejandro Labastida-Ramírez, Anne Luise Vollesen, Christian Lampl, Francesca Cortese, Francesca Marchese, Lanfranco Pellesi, Messoud Ashina, Michele Romoli, On behalf of the School of Advanced Studies of the European Headache Federation (EHF-SAS), Silvia Benemei   +9 more
core   +3 more sources

Regional changes in cerebral blood flow between the upright and supine posture and over 3 days of bed rest

Experimental Physiology, EarlyView.
Abstract A reduction in cerebral blood flow (CBF) has been observed during spaceflight and bed rest. We aimed to examine the magnitude and regional heterogeneity of the decrease in CBF during bed rest compared to posture changes on Earth. Seventeen participants (age, 29 ± 9 years, 7 females) were studied in the upright and supine posture and over 3 ...
Carmen Possnig, Kyohei Marume, Gautam Babu, Sylvan L. J. E. Janssen, Christopher M. Hearon Jr, Katrin A. Dias, Satyam Sarma, Justin S. Lawley, Benjamin D. Levine   +8 more
wiley   +1 more source