PMC6068316_01
A) Critical atrioventricular (AV) block did not occur when vagus nerve stimulation (VNS) was turned off, according to pressure in bilateral carotid arteries. B) With the 1.75-mA output current of VNS, cardiac arrest (arrow) lasted 15 s. C) Complete AV block (arrow) was also detected.
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As VNS reproducibly caused arrhythmia including bradycardia, atrioventricular (AV) block, and a short period of cardiac arrest (Fig. 1), symptomatic bradyarrhythmia with third-degree AV block induced by VNS was diagnosed and a PM was implanted.