Results 51 to 60 of about 35,706 (284)

Cerebral autoregulation: an in vitro study. [PDF]

open access: yesStroke, 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

Detection of impaired cerebral autoregulation improves by increasing arterial blood pressure variability

open access: yes, 2012
Although the assessment of dynamic cerebral autoregulation (CA) based on measurements of spontaneous fluctuations in arterial blood pressure (ABP) and cerebral blood flow (CBF) is a convenient and much used method, there remains uncertainty about its ...
Allen, Robert   +7 more
core   +1 more source

Cerebral vasoreactivity in response to a headof-bed position change is altered in patients with moderate and severe obstructive sleep apnea [PDF]

open access: yes, 2018
Obstructive sleep apnea (OSA) can impair cerebral vasoreactivity and is associated with an increased risk of cerebrovascular disease. Unfortunately, an easy-to-use, non-invasive, portable monitor of cerebral vasoreactivity does not exist. Therefore, we
Blanco, Igor   +9 more
core   +4 more sources

Optimising the assessment of cerebral autoregulation from black box models

open access: yes, 2014
Cerebral autoregulation (CA) mechanisms maintain blood flow approximately stable despite changes in arterial blood pressure. Mathematical models that characterise this system have been used extensively in the quantitative assessment of function ...
Angarita-Jaimes, N.   +4 more
core   +1 more source

Correlation of rheoencephalography and laser Doppler flow: a rat study

open access: yesJournal 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

Cerebral blood flow autoregulation is impaired in schizophrenia [PDF]

open access: yes, 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  

Dissociation of Cerebral Blood Flow and Femoral Artery Blood Pressure Pulsatility After Cardiac Arrest and Resuscitation in a Rodent Model: Implications for Neurological Recovery. [PDF]

open access: yes, 2020
Background Impaired neurological function affects 85% to 90% of cardiac arrest (CA) survivors. Pulsatile blood flow may play an important role in neurological recovery after CA.
Akbari, Yama   +6 more
core   +1 more source

Acute Stroke Multimodal Imaging: Present and Potential Applications toward Advancing Care. [PDF]

open access: yes, 2017
In the past few decades, the field of acute ischemic stroke (AIS) has experienced significant advances in clinical practice. A core driver of this success has been the utilization of acute stroke imaging with an increasing focus on advanced methods ...
Liang, John W.   +3 more
core   +2 more sources

Gravity, intracranial pressure, and cerebral autoregulation [PDF]

open access: yesPhysiological Reports, 2019
Manipulating gravitational stress may affect cerebral autoregulation. These effects can help increase our understanding of the integrative cardiovascular‐ and cerebral physiology.
Lonnie G. Petersen   +2 more
openaire   +6 more sources

Assessing Executive Function in Pediatric Sleep‐Disordered Breathing Using Functional Neuroimaging

open access: yesOtolaryngology–Head and Neck Surgery, EarlyView.
Abstract Objective Sleep‐disordered breathing (SDB) affects 10% of children and is associated with poor academic performance related to inattention and executive dysfunction. Yet, the underlying neural mechanisms remain poorly understood, especially in elementary school‐aged children who cannot sit still for functional magnetic resonance imaging.
Nithya Navarathna   +5 more
wiley   +1 more source

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