Chapter 19

Question 1

how do adrenergic blockers WORK

Answer 1

bind to adrenergic receptors BUT block/inhibit stimulation of the sympathetic nervous system (SNS)

Question 2

characteristics of adrenergic blockers

Answer 2

• OPPOSE actions of adrenergics
• inhibit sympathetic stimulation
• known as adrenergic antagonists/sympatholytics

Question 3

how are adrenergic blockers classified

Answer 3

by the receptor they block:

• alpha 1 and 2 receptors
• beta 1 and 2 receptors

Question 4

what do alpha blocker meds end in?

Answer 4

-sin: primarily block alpha 1 receptors

Question 5

therapeutic alpha blocker usages

Answer 5

• essential hypertension
• reversal of toxicity from alpha agonists (prevent effects extravasation- fluid leaking)
• BPH
• pheochromocytoma (tumor on adrenal gland)
• raynaud’s disease