Adrenergic Agonists

Question 1

6.1 Which of the following is correct regarding adrenergic neurotransmission?

Answer 1

C. Tricyclic antidepressants and cocaine prevent reuptake of norepinephrine into the nerve terminals.

Question 2

6.2 All of the following are correct regarding adrenergic receptors, except:

Answer 2

D. β2
Receptors are found mainly in adipose tissue.

Question 3

6.4 Which of the following is correct regarding responses mediated by adrenergic receptors?

Answer 3

A. Stimulation of α1 receptors increases blood
pressure.

Question 4

6.3 A hypertensive patient was accidentally given an α2
agonist instead of an α1 blocker. Which of the following is correct in this situation?

Answer 4

B. α2 Agonists can reduce blood pressure in this patient.

Question 5

6.5 An asthma patient was given a nonselective β agonist to relieve bronchoconstriction. Which of the following adverse effects would you expect to see in this patient?

Answer 5

B. Tachycardia.

Question 6

6.6 Which of the following adrenergic agonists is most likely to cause CNS side effects when administered systemically?

Answer 6

E.Ephedrine

Question 7

6.7 A 12-year-old boy who is allergic to peanuts was brought to the emergency room after accidentally consuming peanuts contained in fast food. He is in anaphylactic shock. Which of the following drugs would be most appropriate to treat this patient?

Answer 7

D. Epinephrine.

Question 8

6.8 A 70-year-old patient was brought to the emergency room with a blood pressure of 76/60 mm Hg,
tachycardia, and low cardiac output. He was diagnosed
with acute heart failure. Which of the following drugs
would be the most appropriate to improve his cardiac function?

Answer 8

C. Dobutamine

Question 9

6.9 Which of the following adrenergic agonists is commonly present in nasal sprays available over-the-counter
(OTC) to treat nasal congestion?

Answer 9

C. Oxymetazoline.

Question 10

6.9 Which of the following adrenergic agonists is commonly present in nasal sprays available over-the-counter
(OTC) to treat nasal congestion?

Answer 10

C. Oxymetazoline.

Question 11

6.10 One of your patients who is hypertensive and gets mild asthma attacks occasionally bought an herbal remedy online to help with his asthma. He is not on any asthma medications currently but is receiving a β1-selective
blocker for his hypertension. The herbal remedy seems to relieve his asthma attacks, but his blood pressure
seems to increase despite the β-blocker therapy. Which of the following drugs is most likely present in the herbal remedy he is taking?

Answer 11

D. Ephedrine.