Cerebral hypoxia historical perspective: Difference between revisions
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{{Cerebral hypoxia}} | {{Cerebral hypoxia}} | ||
== Overview == | |||
The relationship between brain function and blood flow has been studied since the classical paper of '''Roy and Sherrington (61)''' at the end of the 19th century. | |||
== Historical Perspective == | |||
* Despite the absence of quantitative methods, early investigators were able to establish some of the basic principles of the cerebral circulation; among these was a recognition of the dominating influence of carbon dioxide and the reciprocal effect of oxygen (72). | |||
* Interestingly, even the idea that local cerebral blood flow (CBF) was transiently augmented with increased neuronal activation, alluded to by '''Roy and Sherrington''', had received additional qualitative experimental support. | |||
* A listing of the qualitative methods in use at the time, including methods such as venous outflow, radium emanation, and thermocouple, can be found in the '''1936 Wolff review''' (72). | |||
* Nevertheless, despite more than 100 years of effort, there are still major areas concerning the control of the cerebral circulation that remain unknown. | |||
* The observations that decreasing oxygen led to increased blood flow and that the increase was blunted perhaps by the accompanying hypoxia-induced hyperventilation and resultant decreased carbon dioxide remained wholly qualitative until a useful quantitative method, based on inert gases, was developed for measuring CBF and oxygen metabolism by '''Kety and Schmidt''' (33, 35). | |||
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==References== | ==References== | ||
# https://journals.physiology.org/doi/full/10.1152/japplphysiol.00940.2005 | |||
[[Category:Neurology]] | [[Category:Neurology]] | ||
[[Category:Needs content]] | [[Category:Needs content]] | ||
Revision as of 02:10, 14 July 2022
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Overview
The relationship between brain function and blood flow has been studied since the classical paper of Roy and Sherrington (61) at the end of the 19th century.
Historical Perspective
- Despite the absence of quantitative methods, early investigators were able to establish some of the basic principles of the cerebral circulation; among these was a recognition of the dominating influence of carbon dioxide and the reciprocal effect of oxygen (72).
- Interestingly, even the idea that local cerebral blood flow (CBF) was transiently augmented with increased neuronal activation, alluded to by Roy and Sherrington, had received additional qualitative experimental support.
- A listing of the qualitative methods in use at the time, including methods such as venous outflow, radium emanation, and thermocouple, can be found in the 1936 Wolff review (72).
- Nevertheless, despite more than 100 years of effort, there are still major areas concerning the control of the cerebral circulation that remain unknown.
- The observations that decreasing oxygen led to increased blood flow and that the increase was blunted perhaps by the accompanying hypoxia-induced hyperventilation and resultant decreased carbon dioxide remained wholly qualitative until a useful quantitative method, based on inert gases, was developed for measuring CBF and oxygen metabolism by Kety and Schmidt (33, 35).