Results 281 to 290 of about 782,046 (314)

Autoregulation of Cerebral Blood Flow

1997
This 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
openaire   +2 more sources

Cerebral Autoregulation and Vasomotor Reactivity

2006
Various 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 ...
openaire   +2 more sources

Regulation of Cerebral Autoregulation by Carbon Dioxide

Survey of Anesthesiology, 2015
Abstract 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
openaire   +4 more sources

Optical assessment of cerebral autoregulation

Neural Imaging and Sensing 2018, 2018
Cerebral 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
openaire   +2 more sources

Continuous Monitoring of Cerebral Autoregulation in Children Supported by Extracorporeal Membrane Oxygenation: A Pilot Study

Neurocritical Care, 2020
N. Joram, E. Beqiri, Stefano Pezzato, A. Moscatelli, C. Robba, J. Liet, A. Chenouard, P. Bourgoin, M. Czosnyka, P. Léger, P. Smielewski   +10 more
semanticscholar   +1 more source

Hypoglycemia and Cerebral Autoregulation

Journal of Neurosurgical Anesthesiology, 1989
Raymond C. Koehler, S. A. Derrer, Richard J. Traystman, C. D. Saudek, Frederick E. Sieber   +4 more
openaire   +2 more sources

Empirical modeling of cerebral autoregulation

2013
Mathematical models of the cardiovascular system and of Cerebral AutoRegulation have been employed for several years in order to describe the time course of pressures and flows changes subsequent to postural changes. The assessment of the degree of efficiency of Cerebral AutoRegulation has indeed importance in the prognosis of such conditions as ...
Panunzi Simona, D'Orsi Laura, Iacoviello Daniela, De Gaetano Andrea   +3 more
openaire   +2 more sources

On the Contribution of Respiratory Gases to Cerebral Autoregulation

1997
Autoregulation has been defined as the occurrence of vasodilation when cerebral perfusion pressure (CPP) decreases and the occurrence of vasoconstriction when CPP increases. 2 Two main mechanisms, myogenic and metabolic, have been proposed to explain autoregulation.
openaire   +3 more sources

Drugs and cerebral autoregulation

European Journal of Clinical Investigation, 1982
openaire   +3 more sources

Effects of hypoxia on cerebral autoregulation

American Journal of Physiology-Legacy Content, 1970
Peritz Scheinberg, K Kogure, Masatoshi Fujishima, O. M. Reinmuth, Raul Busto   +4 more
openaire   +3 more sources