Results 301 to 310 of about 775,260 (336)
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Cerebral Autoregulation in Normal Pregnancy and Preeclampsia
Obstetric Anesthesia Digest, 2013To test the hypothesis that preeclampsia is associated with impaired dynamic cerebral autoregulation.In a prospective cohort analysis, cerebral blood flow velocity of the middle cerebral artery (determined by transcranial Doppler), blood pressure (determined by noninvasive arterial volume clamping), and end-tidal carbon dioxide were simultaneously ...
Ronney B. Panerai +5 more
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Cerebral Autoregulation in Neonates
Advances in Clinical Medicine, 2023盈欣 庄
semanticscholar +1 more source
Cerebral Autoregulation-oriented Therapy at the Bedside: A Comprehensive Review
Anesthesiology, 2017This comprehensive review summarizes the evidence regarding use of cerebral autoregulation-directed therapy at the bedside and provides an evaluation of its impact on optimizing cerebral perfusion and associated functional outcomes.
Lucia Rivera-Lara +5 more
semanticscholar +1 more source
The Frequency-Dependent Behavior of Cerebral Autoregulation
Neurosurgery, 1990Abstract Cerebral autoregulation is a complex physiological process composed of both fast and slow components that may respond differently to different rates and patterns of blood pressure variation. To assess the temporal nature of autoregulation, transcranial Doppler velocity recordings of the middle cerebral artery obtained over ...
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Predictors of Outcome With Cerebral Autoregulation Monitoring: A Systematic Review and Meta-Analysis
Critical Care Medicine, 2017Objective: To compare cerebral autoregulation indices as predictors of patient outcome and their dependence on duration of monitoring. Data Sources: Systematic literature search and meta-analysis using PubMed, EMBASE, and the Cochrane Library from ...
Lucia Rivera-Lara +8 more
semanticscholar +1 more source
Autoregulation of Cerebral Blood Flow
1997This chapter presents some of the fundamental aspects of cerebral vascular autoregulation with respect to its limits along with the consequences of exceeding those limits. Autoregulation of blood flow is a regulatory mechanism that allows blood flow in most vascular beds to remain relatively constant during variations of arterial pressure.
Gary L. Baumbach, Jean-Marc Chillon
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Regulation of Cerebral Autoregulation by Carbon Dioxide
Survey of Anesthesiology, 2015Abstract Cerebral autoregulation describes a mechanism that maintains cerebral blood flow stable despite fluctuating perfusion pressure. Multiple nonperfusion pressure processes also regulate cerebral perfusion. These mechanisms are integrated.
Adrian W. Gelb, Lingzhong Meng
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Cerebral Autoregulation and Vasomotor Reactivity
2006Various aspects of the cerebral blood-flow regulation can be assessed by transcranial Doppler (TCD). This chapter describes and discusses the approaches that have been reported in the literature. The steady-state characteristics of the cerebral autoregulation can be determined by changing the blood pressure level, and calculating the response of the ...
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Optical assessment of cerebral autoregulation
Neural Imaging and Sensing 2018, 2018Cerebral autoregulation (CA) is a homeostatic mechanism that maintains a relatively constant cerebral blood flow (CBF) in the presence of changes in the cerebral perfusion pressure (CCP), defined as the difference between mean arterial pressure (MAP) and intracranial pressure (ICP). Given the importance of adequate and consistent brain perfusion, CA is
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