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  • Title: Pial arterial reactions to hyper- and hypocapnia: a dynamic experimental study in cats.
    Author: Auerr L.
    Journal: Eur Neurol; 1978; 17(6):351-62. PubMed ID: 33809.
    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.
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