PMID: 1204856Oct 1, 1975Paper

Participation of the cardiac sympathetic innervation in the occurrence of vagotomic and atropine tachycardia in anesthetized dogs

Fiziologicheskiĭ zhurnal SSSR imeni I. M. Sechenova
M G Nikol'skaiaM G Udel'nov

Abstract

The sympathetic nervous system's role in the post-vagotomy and atropin-induced tachycardia was studied in anesthetized dogs. Bilateral vagotomy was followed by 166% tachycardia while on exclusion of the heart sympathetic innervation (inderal or novocain injections into the right stellate ganglion) the bilateral vagotomy was accompanied by a considerably lesser tachycardia (33%). The i.v. atropine administration increased the heart rate by 177% whereas in the presence of inderal it increased the heart rate by 77% only. Thereupon, the post-vagotomy or atropin-induced tachycardia in anesthetized dogs was to a considerable extent associated with activation of the sympatho-adrenal system.

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