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Right Vagal Stimulation Suppresses Atrial Fibrillation. Introduction: We sought to extend the use of low‐level vagal stimulation by applying it only to the right vagus nerve (LL‐RVS) to suppress atrial fibrillation (AF).Methods: In 10 pentobarbital anesthetized dogs, LL‐RVS (20 Hz, 0.1 ms pulse width) was delivered to the right vagal trunk via wire electrodes at voltages 50% below that which slowed the sinus rate (SR) or atrio‐ventricular conduction. Electrode catheters were sutured at multiple atrial and pulmonary vein (PV) sites to record electrograms. LL‐RVS continued for 3 hours. At the end of each hour, 40 ms of high‐frequency stimulation (HFS; 100 Hz, 0.01 ms pulse width) was delivered 2 ms after atrial pacing (during the refractory period) to determine the AF threshold (AF‐TH) at each site. Other electrodes were attached to the superior left ganglionated plexi (SLGP) and right stellate ganglion (RSG) so that HFS (20 Hz, 0.1 ms pulse width) to these sites induced SR slowing and acceleration, respectively. Microelectrodes inserted into the anterior right ganglionated plexi (ARGP) recorded neural activity....
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