Oscillations of Intramuscular pH in Perfused Rat Heart
- 1 March 1973
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Physiology and Pharmacology
- Vol. 51 (3) , 234-238
- https://doi.org/10.1139/y73-035
Abstract
The intramuscular pH of the isolated perfused rat heart fluctuated between 7.11 and 7.14 during each contraction–relaxation cycle; the pH began to decline prior to the onset of cardiac contraction. The observed pH oscillations are independent of the mechanical activity and seem to reflect cyclic fluctuations in heart metabolism during the process of "excitation – metabolic stimulation" in the cardiac muscle.Keywords
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