Results 21 to 30 of about 3,313,018 (220)

Differentiating Dynamic Cerebral Autoregulation Across Vascular Territories

Frontiers in Neurology, 2021
Objective: Transcranial Doppler is commonly used to calculate cerebral autoregulation, but measurements are typically restricted to a single cerebral artery.
Navpreet Reehal, Stephanie Cummings, Michael T. Mullen, Wesley B. Baker, David Kung, William Tackett, Christopher G. Favilla   +6 more
doaj   +1 more source

Dynamic Cerebral Autoregulation Is Unaffected by Aging [PDF]

Stroke, 2000
Background and Purpose —Normal aging is associated with marked changes in the cardiovascular and cerebrovascular systems. Although cerebral autoregulation (CA) is impaired in certain disease states, the effect of age per se on dynamic CA in humans is unknown and the focus of this study. Methods
B J, Carey, P J, Eames, M J, Blake, R B, Panerai, J F, Potter   +4 more
openaire   +2 more sources

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

, 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, D M Simpson, Simpson, David Martin, Kouchakpour, Hasam, H Kouchakpour, R Allen   +5 more
core   +2 more sources

Non-Invasive and Minimally-Invasive Cerebral Autoregulation Assessment: A Narrative Review of Techniques and Implications for Clinical Research

Frontiers in Neurology, 2022
The process of cerebral vessels regulating constant cerebral blood flow over a wide range of systemic arterial pressures is termed cerebral autoregulation (CA).
Amanjyot Singh Sainbhi, Alwyn Gomez, Alwyn Gomez, Logan Froese, Trevor Slack, Carleen Batson, Kevin Y. Stein, Dean M. Cordingley, Dean M. Cordingley, Arsalan Alizadeh, Frederick A. Zeiler, Frederick A. Zeiler, Frederick A. Zeiler, Frederick A. Zeiler, Frederick A. Zeiler   +14 more
doaj   +1 more source

Steady‐state cerebral blood flow and dynamic cerebral autoregulation during neck flexion and extension in seated healthy young adults

Physiological Reports, 2023
Neck flexion and extension show differences in various physiological factors, such as sympathetic nerve activity and intracranial pressure (ICP). We hypothesized that differences would exist in steady‐state cerebral blood flow and dynamic cerebral ...
Tomokazu Kato, Toru Konishi, Takuya Kurazumi, Yojiro Ogawa, Ken‐ichi Iwasaki   +4 more
doaj   +1 more source

Cerebral autoregulation dynamics in humans. [PDF]

Stroke, 1989
We studied the response of cerebral blood flow to acute step decreases in arterial blood pressure noninvasively and nonpharmacologically in 10 normal volunteers during normocapnia, hypocapnia, and hypercapnia. The step (approximately 20 mm Hg) was induced by rapidly deflating thigh blood pressure cuffs following a 2-minute inflation above systolic ...
R, Aaslid, K F, Lindegaard, W, Sorteberg, H, Nornes   +3 more
openaire   +2 more sources

Venous sinus stenting improves cerebral autoregulation in a patient with venous sinus stenosis: a case report

BMC Neurology, 2020
Background Venous sinus stenosis (VSS) is a type of cerebral venous vascular disease. Cerebral autoregulation is an indicator of cerebral arterial function. The cerebral circulatory system is composed of the venous system and arterial system.
Meiyan Jia, Zhen-Ni Guo, Hang Jin, Xiuli Yan, Mingchao Shi, Xin Sun, Hongyin Ma, Shan Lv, Yi Yang   +8 more
doaj   +1 more source

Middle cerebral artery dynamic cerebral autoregulation is impaired by infarctions in the anterior but not the posterior cerebral artery territory in patients with mild strokes

Translational Neuroscience, 2023
The aim of this study was to ascertain whether dynamic cerebral autoregulation (CA) in the middle cerebral artery (MCA) is disturbed by cerebral infarctions outside the MCA territory.
Bolognese Manuel, Karwacki Grzegorz, Österreich Mareike, Müller Martin, Lakatos Lehel   +4 more
doaj   +1 more source

Impaired Cerebral Autoregulation in Parkinson's Disease: An Orthostatic Hypotension Analysis

Frontiers in Neurology, 2022
Orthostatic hypotension (OH) is an early non-motor manifestation of Parkinson's disease (PD). However, the underlying mechanism of hemodynamic changes in patients with PD and OH remains unclear.
Yingqi Xing, Yingqi Xing, Yingqi Xing, Qing Li, Qing Li, Qing Li, Erhe Xu, Jingrong Zeng, Qiuping Li, Qiuping Li, Qiuping Li, Shanshan Mei, Yang Hua, Yang Hua, Yang Hua   +14 more
doaj   +1 more source

Dynamic Cerebral Autoregulation and Monitoring Cerebral Perfusion [PDF]

Hypertension, 2010
Cerebral autoregulation (CA) describes the capability of the brain to maintain its flow as relatively stable over a wide rage of mean arterial pressures (MAPs), for example, from 60 to 150 mm Hg. Because the brain is encompassed in the skull, CA is vital for preventing cerebral edema and hemorrhage, as illustrated in some patients experiencing acute ...
Secher, Niels H, van Lieshout, Johannes J   +1 more
openaire   +3 more sources