Vagal reflex bradycardia

**Vagal reflex bradycardia** is a form of neurocardiogenic or baroreceptor-mediated bradyarrhythmia affecting the cardiovascular and autonomic nervous systems, characterized by an acute deceleration of heart rate in response to excessive parasympathetic (vagal) efferent discharge It arises when physiological or pathological triggers—such as sudden increases in systemic arterial pressure stimulating carotid or aortic baroreceptors, visceral manipulation during surgical procedures, emotional distr...

**Vagal reflex bradycardia** is a form of neurocardiogenic or baroreceptor-mediated bradyarrhythmia affecting the cardiovascular and autonomic nervous systems, characterized by an acute deceleration of heart rate in response to excessive parasympathetic (vagal) efferent discharge This process culminates in acetylcholine release onto cardiac muscarinic M2 receptors, depressing sinoatrial nodal automaticity and delaying or interrupting atrioventricular nodal conduction, which can produce marked si...

**Vagal reflex bradycardia** is a form of neurocardiogenic or baroreceptor-mediated bradyarrhythmia affecting the cardiovascular and autonomic nervous systems, characterized by an acute deceleration of heart rate in response to excessive parasympathetic (vagal) efferent discharge It arises when physiological or pathological triggers—such as sudden increases in systemic arterial pressure stimulating carotid or aortic baroreceptors, visceral manipulation during surgical procedures, emotional distr...