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  • Title: The effect of CO2-breathing on cochlear blood flow.
    Author: Hultcrantz E, Larsen HC, Angelborg C.
    Journal: Arch Otorhinolaryngol; 1980; 228(3):211-5. PubMed ID: 6775623.
    Abstract:
    The cochlear blood flow was measured with the microsphere methods, before and during CO2-inhalation, in anesthetized rabbits. Different gas mixtures and exposure times were used. The greatest increase of cochlear blood flow was measured after 5 min inhalation of 7% CO2 in air (115%) and the least increase (44%) in animals breathing 7% CO2 in oxygen. The difference is explained as due to a vasoconstriction caused by a high oxygen tension counteracting the vasodilating effect of CO2.
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