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  • Title: Cardiac anoxia tolerance of carbon monoxide-poisoned, hypoxia-exposed and normal rats.
    Author: Penney D, Benjamin M, Bugaisky L.
    Journal: Environ Physiol Biochem; 1975; 5(3):127-31. PubMed ID: 1149721.
    Abstract:
    Under nitrogen anoxia heart rate (HR) persists at a high level for 1 min longer in rats exposed chronically to carbon monoxide and hypoxia than in unexposed control rats. Although declining sharply, HR of exposed animals continues higher than HR of controls during min 1-4 of anoxia. However, during min 5 and 6 of anoxia HR of CO-poisoned rats becomes similar to that of controls, while HR of hypoxia-exposed rats remains above control HR for 3 min longer. The data are discussed in light of cardiovascular changes induced by CO and hypobaric hypoxia.
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