Effects of stimulation of the vagus nerve on the heart

Effects of stimulation of the vagus nerve on the heart

  • Slows heart rate (negative chronotropic action on SAN).
  • Reduces atrioventricular conduction (negative dromotropic action on AVN).
  • Changes threshold for induction of atrial fibrillation (action on atrial conduction system).
  • Reduces ventricular contractility (negative inotropic action on the ventricular myocardium).
  • Lowers threshold for induction of ventricular arrhythmias (action on ventricular conduction system).

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Dr. Bbosa Science

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