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  • Title: Intracellular acid-base state at a variable temperature in air-breathing vertebrates and its representation.
    Author: Malan A.
    Journal: Respir Physiol; 1978 Apr; 33(1):115-9. PubMed ID: 27849.
    Abstract:
    When temperature changes are superimposed on changes in the control variables of acid-base state (PCO2, strong ion difference), the understanding of acid-base changes becomes difficult. A solution has recently been proposed for blood (Malan, 1977); it was based on the assumption that closed system conditions correspond to a minimal change in the overall acid-base state when temperature varies. The feasibility of extending these concepts to muscle intracellular acid-base vs temperature relationships is evaluated on the basis of a model study; the errors made by replacing closed conditions (which require knowledge of chemical composition) by more convenient approximations are estimated. A representation of both extracellular and intracellular acid-base data on a temperature-corrected bicarbonate-pH diagram is derived. It allows the interpretation of variable-temperature intracellular acid-base changes in terms of changes in control variables, 'respiratory (PCO2) or 'metabolic' (strong ion difference).
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