Vasopressors

Question 1

Atropine (IV)

Answer 1

may be used in the treatment of bradycardia (may also increase BP)

Question 2

Phenylephrine (IV)

Answer 2

Used to control BP in Hypotension and Shock; increase BP, minimal decrease in HR

Question 3

Dobutamine

Answer 3

Increase Force of Contraction, little increase in HR

Question 4

Isoproterenol

Answer 4

increases HR and FOC

Question 5

Norepinephrine (IV)

Answer 5

Excellent Alpha 1 agonist

Vasoconstricts vascular smooth muscle, nasal mucosa, bladder, and eyes

Question 6

Epinephrine non cardiac

Answer 6

Non selective adrenergic agonist
low dose: beta driven effect
high dose: added alpha driven effect

Question 7

epinephrine therapeutic uses

Answer 7

anaphylaxis, bronchospasm, asthma exacerbation, status asthmaticus, croup

Question 8

Epinephrine and local anesthetics

Answer 8

use together because epinephrine constricts vessels which prolongs efficacy of local anesthetic in area during procedure

Question 9

Dopamine therapeutic uses

Answer 9

Good for severe CHF with fluid overload
Increases urine output from diuretic effect on D1 (coronary and renal vessels)
Hemodynamic support: cardiogenic or septic shock

Question 10

Dopamine doses

Answer 10

Low: D1 receptor activation (increase diuresis)
Moderate: add Beta 1 activation (increase CO, renal benefit)
High: add alpha 1 activation; less D1 activation (vasopressor)