Results 111 to 120 of about 1,114,187 (407)
Effects of non-physiological blood pressure artefacts on measures of cerebral autoregulation [PDF]
arXiv, 2016 Cerebral autoregulation refers to regulation mechanisms that aim to maintain cerebral blood flow approximately constant. It is often assessed by autoregulation index (ARI), which uses arterial blood pressure and cerebral blood flow velocity time series to produce a ten-scale index of autoregulation performance (0 denoting the absence of and 9 the ...
arxiv
Hyperventilation and Cerebral Blood Flow [PDF]
Stroke, 1972 Hypocapnic-hyperventilation has a profound, but probably temporary, effect on CBF, producing approximately a 2% decline in CBF for each 1 torr decline in P co co2 . This effect appears to be mediated through changes in perivascular pH of the cerebral resistance vessels ...
Fred Plum, Marcus E. Raichle
openaire +2 more sources
Advanced Materials, EarlyView.This article summarizes significant technological advancements in materials, photonic devices, and bio‐interfaced systems, which demonstrate successful applications for impacting human healthcare via improved therapies, advanced diagnostics, and on‐skin health monitoring.
Seunghyeb Ban +5 more
wiley +1 more source
Impact of Intra-Extracranial Hemodynamics on Cerebral Ischemia by Arterial Hypertension (Part 1) [PDF]
International Journal of Biomedicine, 2012 The present study was conducted to examine the interaction of biochemical parameters within the blood flow, their effect on the cerebral blood flow, as well as the mechanisms of cerebral ischemia by stable arterial hypertension.
Alexander G. Kruglov, PhD, ScD +2 more
doaj
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
Mathematical model of the interaction between baroreflex and cerebral autoregulation [PDF]
4th International Conference on Computational and Mathematical
Biomedical Engineering - CMBE2015 (2015), 721-724, 2015 Baroreflex (BR) and cerebral autoregulation (CA) are two important mechanisms regulating blood pressure and flow. However, the functional relationship between BR and CA in humans is unknown. Since BR impairment is an adverse prognostic indicator for both cardiac and cerebrovascular diseases it would be of clinical interest to better understand the ...
arxiv
Modelling of impaired cerebral blood flow due to gaseous emboli [PDF]
, 2012 Bubbles introduced to the arterial circulation during invasive medical procedures can have devastating consequences for brain function but their effects are currently difficult to quantify. Here we present a Monte-Carlo simulation investigating the impact of gas bubbles on cerebral blood flow.
arxiv +1 more source
The effect of infusions of adrenaline, noradrenaline and dopamine on cerebral autoregulation under isoflurane anaesthesia in an ovine model [PDF]
, 2003 Publisher's copy made available with the permission of the publisher © Australian Society of AnaesthetistsThe effects of infusions of adrenaline, noradrenaline and dopamine on cerebral autoregulation under steady-state isoflurane anaesthesia were ...
Grant, C. +3 more
core +1 more source
The contribution of astrocytes to the regulation of cerebral blood flow
Frontiers in Neuroscience, 2014 In order to maintain normal brain function, it is critical that cerebral blood flow (CBF) is matched to neuronal metabolic needs. Accordingly, blood flow is increased to areas where neurons are more active (a response termed functional hyperemia).
C. Howarth
semanticscholar +1 more source
Advanced Materials, EarlyView.Upconversion nanoparticle‐covalent organic framework core–shell particles provide enhanced contrast for optoacoustic imaging by leveraging the optical absorption of upconversion luminescence within the covalent organic framework matrix. Beyond their role as contrast agents, these particles enable customizable therapeutic agent loading and release, as ...
Dong Wook Kim +8 more
wiley +1 more source