Adrenergic Antagonists Flashcards
Phenoxybanzamine type & use
irreversible non-selective alpha blocker
tx pheochromocytoma
phentolamine type, effects, and use
non-selective alpha blocker
decrease PVR & BP
tx HTN crisis due to pheochromocytoma or MAOI
prazosin type, characteristics, and use
a1 blocker
decrease PVR & preload
given 2x/day, risk of orthostatic hypo
tx HTN & BPH
terazosin, doxazosin
type, use, & characteristic
a1 blocker
decrease PVR & preload
tx HTN & BPH
similar to prazosin w/ 1x/day dosing
Tamsulosin, alfuzosin
type & use
alpha-1a selective
less risk of orthostatic hypotension
tx prostate problems
yohimbine type, effects
a2 blocker
increase NE release, increase BP/HR
may interfere w/ clonidine
labetalol type, effects, & use
a1, B1, B2 blocker
decrease PVR, prevents tachycardia
used IV for HTN emergencies
carvedilol type, effects, and use
a1, B1, B2 blocker
decrease PVR, prevents tachycardia
used CHF & post-MI
propranolol type, characteristics, effects, contraindications
B1, B2 blocker
oral, enters CNS
decrease HR & contractility, decreases BP w/ chronic use, decreased renin, glycogenolysis, lipolysis
bronchoconstriction- contraindicated in asthma
timolol type & use, cautions
B1, B2 blocker
tx glaucoma
caution in asthma
nadolol type & characteristic
non-selective B blocker
no CNS activity
Sotalol type & use
non-specific B-blocker
anti-arrhythmic
pindolol, carteolol, penbutol
type, characteristic, use
non-selective B-blocker
intrinsic sympathetic activity: may decrease risk for bronchoconstriction or bradycardia
carteolol for glaucoma tx
metoprolol, atenolol, bisprolol type, effects, use
B1 blocker
decrease HR and force of contraction
tx HTN or post-MI
betaxolol type & use
B1 blocker
tx glaucoma, a safer timolol
