Results 21 to 30 of about 5,618,586 (305)

Cerebral blood flow remains reduced after tilt testing in myalgic encephalomyelitis/chronic fatigue syndrome patients

open access: yesClinical Neurophysiology Practice, 2021
Objective: Orthostatic symptoms in myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) may be caused by an abnormal reduction in cerebral blood flow.
C. (Linda) M.C. van Campen   +2 more
doaj   +1 more source

Systemic and cerebral blood flow [PDF]

open access: yesArchives of Disease in Childhood - Fetal and Neonatal Edition, 2003
We read with interest the findings of Evans et al concerning the changes in middle cerebral artery (MCA) haemodynamics over the first two days after birth in preterm infants.1 Evans et al demonstrated a significant change in several Doppler velocity measures in the MCA, including systolic, diastolic, and mean velocity, pulsatility index and velocity ...
C M, Kissack   +2 more
openaire   +2 more sources

Study of the relationship between regional cerebral saturation and pCO2 changes during mechanical ventilation to evaluate modifications in cerebral perfusion in a newborn piglet model [PDF]

open access: yesBrazilian Journal of Medical and Biological Research, 2022
Near-infrared spectroscopy (NIRS) could be a useful continuous, non-invasive technique for monitoring the effect of partial pressure of carbon dioxide (PaCO2) fluctuations in the cerebral circulation during ventilation.
F. Silvera   +13 more
doaj   +1 more source

The effect of absent blood flow on the zebrafish cerebral and trunk vasculature

open access: yesVascular Biology, 2021
The role of blood flow in vascular development is complex and context-dependent. In this study, we quantify the effect of the lack of blood flow on embryonic vascular development on two vascular beds, namely the cerebral and trunk vasculature in ...
Elisabeth Kugler   +8 more
doaj   +1 more source

Cerebral blood flow modeling in primate cortex [PDF]

open access: yes, 2010
We report new results on blood flow modeling over large volumes of cortical gray matter of primate brain. We propose a network method for computing the blood flow, which handles realistic boundary conditions, complex vessel shapes, and complex nonlinear ...
Plouraboué, Franck   +5 more
core   +1 more source

Nonlinear, multiple-input modeling of cerebral autoregulation using Volterra Kernel estimation [PDF]

open access: yes, 2010
Autoregulation refers to the automatic adjustment of blood flow to supply the required oxygen and glucose and remove waste, in proportion to the tissue’s requirement at any instant of time.
Allen, Robert   +2 more
core   +2 more sources

Dehydration affects cerebral blood flow but not its metabolic rate for oxygen during maximal exercise in trained humans [PDF]

open access: yes, 2014
This article has been made available through the Brunel Open Access Publishing Fund.Key points: Dehydration accrued during exercise in the heat challenges systemic and locomotor muscle blood flow, but its impact on cerebral blood flow (CBF) and ...
Stock, Christopher G   +12 more
core   +1 more source

Lack of effect of pravastatin on cerebral blood flow or parenchymal volume loss in elderly at risk for vascular disease [PDF]

open access: yes, 2005
<p><b>Background and Purpose:</b> Ageing is associated with a decline in cerebral blood flow. Animal studies have shown that cholesterol-lowering therapy with statins might preserve cerebral blood flow (CBF).
Blauw, G.J.   +8 more
core   +1 more source

Hyperventilation and Cerebral Blood Flow [PDF]

open access: yesStroke, 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 ...
M E, Raichle, F, Plum
openaire   +2 more sources

Cerebral blood flow monitoring

open access: yesJournal of Neuroanaesthesiology and Critical Care, 2015
Brain is a unique organ of the body that receives highest amount of cardiac output and totally depend on the blood supply for its survival and no reserve of blood flow making it vulnerable for ischaemia. Other important properties of cerebral circulation
Manikandan Sethuraman
doaj   +1 more source

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