LAST MINUTE MISC SYM AGONISTS Flashcards
a1 selective agonist as direct acting sympathomimetic
orthostatic hypotension
midodrine
alpha and beta receptors causing NE release from tissue stores
hypotension during anesthesia
OTC: weight loss products (PO)
OTC: asthma symptoms (PO)
ephedrine
enantiomer of ephedrine
agonist of alpha and beta adrenergic receptors for nasal decongestant, in many OTC products
CNS stimulation, nervousness
pseudoephedrine
indirect acting alpha and beta actions stimulating release of DA and NE blocking reuptake
used in treatment of ADHD
similar to methamphetamine
amphetamine
indirect, inactivated by monoamine oxidase in the liver (high first pass)
drugs that inhibit MAO may increase tyramine levels significantly increasing catecholamines for hypertension
tyramine
this drug inhibits reuptake of NE into storage vesicles resulting in depletion of catecholamines and serotonin from central and peripheral axon terminals
reserpine
nonselective alpha 1, alpha 2 receptor antagonists decreasing peripheral resistance
treatment for pheochromocytoma?
phentolamine or phenoxybenzamine
alpha 1 antagonist selective
treatment for hypertension and BPH
prazosin
terazosin
doxazosin
alpha 1 antagonist selective
treatment for BPH only
alfuzosin
tamsulosin
silodosin
alpha 2 adrenergic agonist promoting vasoconstriction used for HTN, withdrawal, migraine
clonidine
apraclonidine and brimonidine are derivative used as _____
a2 adrenergic agonist, treats glaucoma, crosses the BBB (brimonidine), apraclonidine does not
eye drops