Results 21 to 30 of about 17,546 (218)

Noninvasive Optical Measurements of Dynamic Cerebral Autoregulation by Inducing Oscillatory Cerebral Hemodynamics

Frontiers in Neurology, 2021
Objective: Cerebral autoregulation limits the variability of cerebral blood flow (CBF) in the presence of systemic arterial blood pressure (ABP) changes.
Thao Pham, Cristianne Fernandez, Giles Blaney, Kristen Tgavalekos, Angelo Sassaroli, Xuemei Cai, Steve Bibu, Joshua Kornbluth, Sergio Fantini   +8 more
doaj   +1 more source

Cerebrovascular Impedance as a Function of Cerebral Perfusion Pressure

IEEE Open Journal of Engineering in Medicine and Biology, 2023
Goal: Cerebrovascular impedance is modulated by a vasoactive autoregulative mechanism in response to changes in cerebral perfusion pressure. Characterization of impedance and the limits of autoregulation are important biomarkers of cerebral health.
Jason Yang, Deepshikha Acharya, William B. Scammon, Samantha Schmitt, Emily C. Crane, Matthew A. Smith, Jana M. Kainerstorfer   +6 more
doaj   +1 more source

Changes in cerebral autoregulation and vasoreactivity after surgical aortic valve replacement: a prospective study

Experimental Physiology, 2023
Surgical aortic valve replacement (SAVR) alters the natural course of severe aortic stenosis (AS). In this study, we aimed to determine the effects of the disease on dynamic cerebral autoregulation and vasoreactivity (VR) and to assess their changes ...
Tiago Pedro, Andreia Costa, Juliana Ferreira, Ana Luísa Rocha, Elson Salgueiro, Gilberto Pereira, Elsa Azevedo, Pedro Castro   +7 more
doaj   +1 more source

Impaired Cerebral Autoregulation After Subarachnoid Hemorrhage: A Quantitative Assessment Using a Mouse Model

Frontiers in Physiology, 2021
Subarachnoid hemorrhage (SAH) is a common form of hemorrhagic stroke associated with high rates of mortality and severe disability. SAH patients often develop severe neurological deficits days after ictus, events attributed to a phenomenon referred to as
Masayo Koide, Masayo Koide, Hannah R. Ferris, Mark T. Nelson, Mark T. Nelson, Mark T. Nelson, George C. Wellman   +6 more
doaj   +1 more source

Antioxidant Melatonin: Potential Functions in Improving Cerebral Autoregulation After Subarachnoid Hemorrhage

Frontiers in Physiology, 2018
Subarachnoid hemorrhage (SAH) is a subtype of stroke with high mortality and morbidity. Impaired cerebral autoregulation following SAH has been reported owing to effects on sympathetic control, endothelial function, myogenic response, and cerebral ...
Zhen-Ni Guo, Zhen-Ni Guo, Hang Jin, Huijie Sun, Yingkai Zhao, Jia Liu, Hongyin Ma, Xin Sun, Yi Yang, Yi Yang   +9 more
doaj   +1 more source

Temporal Course of Cerebral Autoregulation in Patients With Narcolepsy Type 1: Two Case Reports

Frontiers in Neurology, 2019
Cerebral autoregulation is the mechanism by which constant cerebral blood flow is maintained despite changes in arterial blood pressure. In the two presented cases, cerebral autoregulation was impaired in patients with narcolepsy type 1, and both ...
Zhen-Ni Guo, Xin Sun, Yingkai Zhao, Xiuli Yan, Ran Zhang, Zan Wang, Yi Yang, Yi Yang   +7 more
doaj   +1 more source

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

Effects of positive end-expiratory pressure on cerebral hemodynamics in acute brain injury patients

Frontiers in Physiology, 2023
Background: Cerebral autoregulation is the mechanism that allows to maintain the stability of cerebral blood flow despite changes in cerebral perfusion pressure.
Alberto Giardina, Danilo Cardim, Danilo Cardim, Pietro Ciliberti, Denise Battaglini, Lorenzo Ball, Lorenzo Ball, Magdalena Kasprowicz, Erta Beqiri, Peter Smielewski, Marek Czosnyka, Marek Czosnyka, Shirin Frisvold, Matjaž Groznik, Paolo Pelosi, Paolo Pelosi, Chiara Robba, Chiara Robba   +17 more
doaj   +1 more source

Cerebral Autoregulation Status in Relation to Brain Injury on Electroencephalogram and Magnetic Resonance Imaging in Children Following Cardiac Surgery

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2023
Background Disturbed cerebral autoregulation has been reported in children with congenital heart disease before and during cardiopulmonary bypass surgery, but not after.
Minghui Zou, Linyang Yu, Rouyi Lin, Jinqing Feng, Mingjie Zhang, Shuyao Ning, Yanqin Cui, Jianbin Li, Lijuan Li, Li Ma, Guodong Huang, Huaizhen Wang, Xinxin Chen, Jia Li   +13 more
doaj   +1 more source

The consistency of invasive and non-invasive arterial blood pressure for the assessment of dynamic cerebral autoregulation in NICU patients

Frontiers in Neurology, 2022
BackgroundStudies of the clinical application of dynamic cerebral autoregulation show considerable variations, and differences in blood pressure devices may be one of the reasons for this variation.
Weijun Zhang, Hongji Lu, Jia Liu, Aihua Ou, Pandeng Zhang, Jingxin Zhong   +5 more
doaj   +1 more source