Results 31 to 40 of about 445,834 (292)

The change in cerebrovascular reactivity between 3T and 7T measured using graded hypercapnia [PDF]

, 2010
Mapping cerebrovascular reactivity (CVR) to hypercapnia is important both clinically and for improved understanding of the haemodynamic properties of the BOLD effect.
Francis, Susan, Gowland, Penny A., Francis, S, Driver, Ian, Fisher, Joseph, Blockley, N, Blockley, Nicholas, Fisher, J, Gowland, P, Driver, I   +9 more
core   +1 more source

Breath holding index in episodic primary headaches [PDF]

Vojnosanitetski Pregled, 2018
Background/Aim. Examination of cerebrovascular reactivity in patients with primary headaches is focused mainly on migraine, while the smaller number of studies deals with tensiontype and cluster headache, or comparison of cerebral haemodynamic in ...
Podgorac Ana, Petrušić Igor, Radojičić Aleksandra, Zidverc-Trajković Jasna   +3 more
doaj   +1 more source

Intraoperative BOLD-fMRI Cerebrovascular Reactivity Assessment [PDF]

, 2021
Blood oxygenation-level dependent cerebrovascular reactivity (BOLD-CVR) has gained attention in recent years as an effective way to investigate CVR, a measure of the hemodynamic state of the brain, with high spatial and temporal resolution.
Regli, Luca, Christiaan Hendrik Bas van Niftrik, Sebök, Martina; https://orcid.org/, Esposito, Giuseppe, Muscas, Giovanni; https://orcid.org/, Giovanni Muscas, Martina Sebök, Giuseppe Esposito, Fierstra, Jorn, Luca Regli, Jorn Fierstra, van Niftrik, Christiaan Hendrik Bas   +11 more
core   +1 more source

Cerebrovascular Reactivity MRI Protocol - Figures

, 2017
Figures describing an MRI protocol, including tolerability and reproducibility, for measurement of cerebrovascular ...
Pernet, Cyril R, Marshall, Ian, Thrippleton, Michael, Blair, Gordon, Waiter, Gordon, Doubal, Fergus, Hamilton, Iona, Shi, Yulu, Andrews, Peter JD, Schwarzbauer, Christian, Wardlaw, Joanna   +10 more
core   +2 more sources

The cerebrovascular effects of adrenaline, noradrenaline and dopamine infusions under propofol and isoflurane anaesthesia in sheep [PDF]

, 2002
Publisher's copy made available with the permission of the publisher © Australian Society of AnaesthetistsInfusions of catecholamines are frequently administered to patients receiving propofol or isoflurane anaesthesia.
Grant, C., Upton, R., Martinez, A., Myburgh, J.   +3 more
core   +1 more source

Optimal bispectral index level of sedation and cerebral oximetry in traumatic brain injury: a non-invasive individualized approach in critical care?

Intensive Care Medicine Experimental, 2022
Background Impaired cerebral autoregulation has been linked with worse outcomes, with literature suggesting that current therapy guidelines fail to significantly impact cerebrovascular reactivity.
Logan Froese, Alwyn Gomez, Amanjyot Singh Sainbhi, Carleen Batson, Trevor Slack, Kevin Y. Stein, Francois Mathieu, Frederick A. Zeiler   +7 more
doaj   +1 more source

Measuring Cerebrovascular Reactivity: Sixteen Avoidable Pitfalls

Frontiers in Physiology, 2021
An increase in arterial PCO2 is the most common stressor used to increase cerebral blood flow for assessing cerebral vascular reactivity (CVR). That CO2 is readily obtained, inexpensive, easy to administer, and safe to inhale belies the difficulties in ...
Olivia Sobczyk, Olivia Sobczyk, Jorn Fierstra, Lakshmikumar Venkatraghavan, Julien Poublanc, James Duffin, James Duffin, Joseph A. Fisher, Joseph A. Fisher, Joseph A. Fisher, David J. Mikulis, David J. Mikulis   +11 more
doaj   +1 more source

Cerebrovascular pressure reactivity and brain tissue oxygen monitoring provide complementary information regarding the lower and upper limits of cerebral blood flow control in traumatic brain injury: a CAnadian High Resolution-TBI (CAHR-TBI) cohort study

Intensive Care Medicine Experimental, 2022
Background Brain tissue oxygen tension (PbtO2) and cerebrovascular pressure reactivity monitoring have emerged as potential modalities to individualize care in moderate and severe traumatic brain injury (TBI).
Alwyn Gomez, Mypinder Sekhon, Donald Griesdale, Logan Froese, Eleen Yang, Eric P. Thelin, Rahul Raj, Marcel Aries, Clare Gallagher, Francis Bernard, Andreas H. Kramer, Frederick A. Zeiler   +11 more
doaj   +1 more source

Cerebrovascular reactivity during hypothermia and rewarming [PDF]

British Journal of Anaesthesia, 2007
Experimental evidence from a murine model of traumatic brain injury (TBI) suggests that hypothermia followed by fast rewarming may damage cerebral microcirculation. The effects of hypothermia and subsequent rewarming on cerebral vasoreactivity in human TBI are unknown.This is a retrospective analysis of data acquired during a prospective, observational
A, Lavinio, I, Timofeev, J, Nortje, J, Outtrim, P, Smielewski, A, Gupta, P J, Hutchinson, B F, Matta, J D, Pickard, D, Menon, M, Czosnyka   +10 more
openaire   +2 more sources

Relationship between oxygen supply and cerebral blood flow assessed by transcranial Doppler and near-infrared spectroscopy in healthy subjects during breath-holding [PDF]

, 2006
Background Breath – holding (BH) is a suitable method for inducing cerebral vasomotor reactivity (VMR). The assessment of VMR is of clinical importance for the early detection of risk conditions and for the follow-up of disabled patients.
LIBONI W, Molinari, Filippo, Negri, E., GRIPPI G, NEGRI E., Negri Emanuela, Molinari Filippo, Liboni, W., Grippi Gianfranco, Liboni William, Grippi, G.   +10 more
core   +1 more source