Dynamic cerebral autoregulation is acutely impaired during maximal apnoea in trained divers.
PLoS ONE, 2014 AimsTo examine whether dynamic cerebral autoregulation is acutely impaired during maximal voluntary apnoea in trained divers.MethodsMean arterial pressure (MAP), cerebral blood flow-velocity (CBFV) and end-tidal partial pressures of O2 and CO2 (PETO2 and
Troy J Cross +4 more
doaj +1 more source
Ammonia : this is not the end but rather the end of the beginning [PDF]
, 2018 Hepatic encephalopathy (HE) represents a wide spectrum of neurological or neuropsychological symptoms caused by liver disease and/or portosystemic shunts.
Dam, Gitte +2 more
core +1 more source
Cerebral autoregulation: an in vitro study. [PDF]
Stroke, 1981 Cerebral autoregulation can be duplicated in vitro using the large middle cerebral arteries from a calf. The limits of autoregulation were between 50 and 150 mm Hg. Excessively high pressures may lead to the appearance of the "sausage- or bead-string" response followed by forced dilation.
F A Simeone, P E Vinall
openaire +3 more sources
Dynamic cerebral autoregulation is attenuated in young fit women
Physiological Reports, 2019 Young women exhibit higher prevalence of orthostatic hypotension with presyncopal symptoms compared to men. These symptoms could be influenced by an attenuated ability of the cerebrovasculature to respond to rapid blood pressure (BP) changes [dynamic ...
Lawrence Labrecque +9 more
semanticscholar +1 more source
Correlation of rheoencephalography and laser Doppler flow: a rat study
Journal of Electrical Bioimpedance, 2016 Measuring brain electrical impedance (rheoencephalography) is a potential technique for noninvasive, continuous neuro-monitoring of cerebral blood flow autoregulation in humans.
Bodo Michael +6 more
doaj +1 more source
Brain MR-Elastography in microgravity analogous conditions [PDF]
Annual Meeting of the International Society for Magnetic Resonance
in Medicine, May 2021, Online, United States, 2021 The head down tilt (HDT) position is commonly used to simulate vascular and tissue fluid dynamics during spaceflights. In HDT position, the cerebral autoregulation faces difficulties to adjust the vascular tone while the cephalad fluid shifts may yield increased intracranial pressures and altered mechanical properties.
arxiv
Cross-Correlation of Instantaneous Phase Increments in Pressure-Flow Fluctuations: Applications to Cerebral Autoregulation [PDF]
Phys. Rev. E 73, 031915 (2006), 2005 We investigate the relationship between the blood flow velocities (BFV) in the middle cerebral arteries and beat-to-beat blood pressure (BP) recorded from a finger in healthy and post-stroke subjects during the quasi-steady state after perturbation for four different physiologic conditions: supine rest, head-up tilt, hyperventilation and CO_2 ...
arxiv +1 more source
Cerebral blood flow autoregulation is impaired in schizophrenia [PDF]
, 2017 Patients with schizophrenia have a higher risk of cardiovascular diseases and higher mortality from them than does the general population; however, the underlying mechanism remains unclear.
al, et, Ku, Hsiao-Lun, Lane, Timothy
core
The effects of dexmedetomidine on cerebral glucose metabolism, systemic cytokine release and cerebral autoregulation: Studies on healthy volunteers and aneurysmal subarachnoid haemorrhage patients [PDF]
, 2022 Dexmedetomidine is a very selective α2-agonist that has become a popular sedative in the intensive care unit. It has characteristics that make it appealing especially for neurologically compromised patients.
Kallioinen, Minna
core
Journal of Cerebral Blood Flow and Metabolism, 2016 Cerebral autoregulation is the intrinsic ability of the brain to maintain adequate cerebral perfusion in the presence of blood pressure changes. A large number of methods to assess the quality of cerebral autoregulation have been proposed over the last ...
J. Claassen +3 more
semanticscholar +1 more source