Carotid sinus massage is a mechanism of inducing activation of the parasympathetic system. This is because the baroreceptors in the carotid sinus.
Caortid sinus massage --> activation and increased firing of baroreceptors --> transmission to solitary nucleus via glossopharyngeal nerve --> decreased sympathetic output and increased parasymapthetic output v --> increased AV node refractory period and decreased HR
hecticsurreyguyWant to reduce the heart rate while maintaining cardiac output - digitalize the patient (give them digoxin).
Digoxin:
1. increase vagal stimulation of the AV node, thereby reducing heart rate. = "Increased cardiac parasympathetic activity"
2. increase the contractility of the heat. This way alothough you're reducing the heart rate, you're maintaining cardiac output. +
submitted by โcassdawg(1780)
Carotid sinus massage is a mechanism of inducing activation of the parasympathetic system. This is because the baroreceptors in the carotid sinus.
Caortid sinus massage --> activation and increased firing of baroreceptors --> transmission to solitary nucleus via glossopharyngeal nerve --> decreased sympathetic output and increased parasymapthetic output v --> increased AV node refractory period and decreased HR
FA2020 p296