The Influence of the Vagus Nerves upon Conduction between Auricles and Ventricles in the Dog during Auricular Fibrillation
نویسنده
چکیده
The experiments that have been reported indicate that stimulation of either the right vagus or the left vagus nerve is equally effectual in blocking impulses from the auricles to the ventricles when auricular fibrillation is present. Stimulation of the left vagus nerve is as effectual in blocking impulses from the normally beating auricles as from the auricles when in a state of fibrillation, and the type of auricular activity has apparently no influence on the effect which stimulation of the left vagus has on auriculoventricular conduction.
منابع مشابه
On the Differences in the Effects of Stimulation of the Two Vagus Nerves on Rate and Conduction of the Dog's Heart
IT MAY BE CONCLUDED FROM THE RESULTS OBTAINED IN THESE EXPERIMENTS : 1. That stimulation of the right vagus nerve in the dog usually causes arrest of all the chambers of the heart. 2. That stimulation of the left vagus nerve exerts a moderate negative chronotropic effect on the auricles. 3. That stimulation of the left vagus nerve has a profound effect on the conduction of impulses over the aur...
متن کاملThe Relation of the Auricular Activity following Faradization of the Dog's Auricle to Abnormal Auricular Activity in Man
The tumultuous auricular activity which follows faradization of the auricles of mammals and which has been variously described, could be distinctly seen to consist almost constantly in our experiments on dogs of true fibrillatory movements of the separate muscle fibers coëxisting with a rapid auricular tachycardia. During peripheral stimulation of the right vagus nerve the true fibrillation alo...
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PLATE 74. It has been shown by one of us (I) that the normal production of impulses in the region of the sino-auricular node is inhibited by stimulation of the right vagus nerve to a greater extent than by stimulation of the left. Earlier observations, which are fully discussed in that paper, had indeed indicated that such might prove to be the case ; but a clear demonstration of the prepondera...
متن کاملA Physiologico-pathological Study of a Case of Heart-block Occurring in a Dog as a Result of Natural Causes
What is believed to be the first known case of heart-block arising in a dog as a result of an ingenerate pathological lesion is here reported. The auriculo-ventricular dissociation was of that degree known as relatively complete block and became apparent on section of the right vagus nerve. Stimulation of the peripheral end of the cut vagus failed to inhibit the ventricles, although complete in...
متن کاملStudies with the Electrocardiograph on the Action of the Vagus Nerve on the Human Heart
The electrocardiographic records taken during vagus stimulation by pressure from children suffering with chronic heart disease have shown that the stimulation of the vagi in these cases is strikingly effectual. In some of the cases, a definite difference was demonstrated between the action of the right and left vagi. The control of the rate of the heart-beat seemed to predominate usually in the...
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ورودعنوان ژورنال:
- The Journal of Experimental Medicine
دوره 24 شماره
صفحات -
تاریخ انتشار 2004