Pial Arterial Reactions to Hyper- and Hypocapnia: a Dynamic Experimental Study in Cats
- 1 January 1978
- journal article
- research article
- Published by S. Karger AG in European Neurology
- Vol. 17 (6) , 351-362
- https://doi.org/10.1159/000114974
Abstract
In 29 cats, the extent and time-course of the pial arterial reactions to hypo- and hypercapnia were studied by means of the skull-window technique. The typical, well-known dilatations and constrictions during hyper- and hypocapnia were seen. The latent period for dilatation after the beginning of CO2-inhalation was ca. 20 sec. There was no stable relation observable between vessel diameter and arterial carbon dioxide tension (paCO2). Diameter changes lagged behind CO2-changes, indicating that CO2 acts via metabolic regulation, probably extracellular pH.Keywords
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