A doctor is running a clinical trial for a new hemodynamic drug that has been developed for a variety of indications. According to the drug's pharmacodynamic profile, it is a pure adrenergic agonist with no significant antagonistic properties. It is injected into a volunteer, and the hemodynamic parameters are graphed below. Administration of the drug to healthy individuals would most likely result in which of the following physiologic changes?

Question

A doctor is running a clinical trial for a new hemodynamic drug that has been developed for a variety of indications. According to the drug's pharmacodynamic profile, it is a pure adrenergic agonist with no significant antagonistic properties. It is injected into a volunteer, and the hemodynamic parameters are graphed below.  Administration of the drug to healthy individuals would most likely result in which of the following physiologic changes?

Quizplus · Accepted Answer

Eductional Objective: alpha-adrenergic agonists cause vasoconstriction by stimulating  alpha 1 adrenoreceptors in the vascular walls. The increased systemic blood pressure causes a reflexive increase in vagal tone, which results in a slower heart rate and atrioventricular node conduction.

A Doctor Is Running a Clinical Trial for a New