Name that drug...or class of drugs Flashcards
Blocks tyrosine hydroxylase which is the rate-limiting step in dopamine synthesis
Metyrosine (Demser)
A VERY POTENT beta agonist used in the emergency treatment of cardiac arrest and complete heart block
Isoproterenol (Isuprel)
Provide paralysis of skeletal muscle without unconsciousness or anesthesia
Neuromuscular blockers
Used for the treatment of anaphylactic shock
Epinephrine
The use of 2-PAM is controversial in this poisoning
Carbamate pesticides
Form a covalent bond and give a result lasting 30 min - 6 hr
The carbamates
Provide better exercise tolerance than non-selective B blockers
B1 selective
Bc no B2 blocking which controls skeletal muscle vasodilation
Prevent bladder spasm (e.g. after prostate surgery)
Oxybutynin (Ditropan)
Repeated doses can cause malignant hyperthermia
Succinylcholine
Halothane
Selective a1 agonist
Phenylephrine (Neofrin)
Has most profound increased GI effects
Bethanechol (Urecholine)
Increases NE and Dopamine release in the CNS (= stimulant)
Amphetamine
Can cause severe vasoconstriction at the injection or infusion site that can lead to necrosis
Norepinephrine
Used in eye exams because of the mydriatic effect
*Tropicamide
Homatropine
Indirect-acting sympathomimetic that increases the release of norepinephrine and dopamine from neurons, especially in the CNS
Amphetamine
Stimulates a and B1 receptors but not B2.
Norepinephrine (Levophed)
Has most increased GU/bladder activity
Bethanechol (Urecholine)
Depolarizes the neuromuscular junction for a long which desensitizes the receptors so the ACh released has no effect
Depolarizing neuromuscular blocker
Succinylcholine
B3 agonist
Mirabegron (Myrbetriq)
B1 agonist used in cardiac stress tests
Dobutamine (Dobutrex)
Used in pheochromocytoma for a few weeks until the tumor can be surgically removed
Phenoxybenzamine
S/E include gas and vivid nightmares with possible psychosis
Varenicline (Chantix)
What class are the “rescue inhalers” for asthma
Selective B2 agonists
Hydrolyzed by plasma pseudocholinesterase
Succinylcholine