CIS: Pharmacology Of The ANS

Question 1

If a pt. Is giving an alpha 1 agonist to increase BP, what happens to HR

Answer 1

HR decreases due to BR reflex

Question 2

How would you block the decreased HR in a pt. Given an alpha 1 agonist?

Answer 2

Give an mAchR antagonist to inhibit the effects of the parasympathetics

Question 3

How would you counter COPD in a pt.?

Answer 3

Use mAchr agonist to relax bronchial SM

Question 4

If a pt. Needs to relax bronchial SM and a beta 2 agonist isn’t working, what else could be given?

Answer 4

Give mAchR

Question 5

When would you give a pt. A beta 1 selective blocker?

Answer 5

When a pt. Needs a beta blocker but has asthma

Question 6

What does an increased concentration of beta 2 agonist have on HR?

Answer 6

Increases HR because at high concentrations, beta 1 is activated

Question 7

What receptors do antihistamines block?

Answer 7

Histamine receptors and mAchR

Question 8

How does an antihistamine cause increased temperature and cutaneous vasodilation?

Answer 8

They block mAchR’s which prevents sweating