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  • Title: Tachypnea after stimulation of afferent cardiac sympathetic nerve fibers.
    Author: Uchida Y.
    Journal: Am J Physiol; 1976 Apr; 230(4):1003-7. PubMed ID: 1266991.
    Abstract:
    The role of afferent cardiac sympathetic nerve fibers in the regulation of respiration has been examined. Application of potassium chloride or lactic acid solutions to the left ventricular surface of anesthetized vagotomized dogs resulted in a decrease in the manimum firing rate and shortening in period duration of firing of phrenic nerves. Also, application of the agents caused a decrease in amplitude and an increase in rate of respiratory thoracic movements. The same changes in phrenic nerve activity and respiratory movements were produced by coronary artery occlusion and centrifugal electrical stimulation of the left inferior cardiac nerves. The results indicate tachypnea that can be produced by excitation of afferent cardiac sympathetic nerve fibers.
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