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
It’s only systemic use is for the treatment of muscarinic antagonist poisoning
Physostigmine
Severe HTN crisis if given to people on MAOIs for depression
Tyramine
B1 selective antagonist with ~very~ short action
Esmolol
High concentrations act similarly to nicotine
Cholinesterase Inhibitors
Low doses vasodilate renal vascular beds via D1
High doses stimulate B1
Dopamine (Intropin)
Selective B1 agonist
Dobutamine
Decrease laryngospasm before anesthesia by inhibiting all the secretions
Anticholinergics
What class is known for the “first dose phenomenon”
Alpha blockers
Highly selective a1 antagonist used for BPH and HTN
Prazosin (Minipress)
The enlarged prostate is causing a minipress on the urethra so they can’t pee heehee
Found in Belladona plant and Jimson weed
Atropine
Undergoes “aging”
Organophosphates
Used to restore the balance between ACh and dopamine in the brain in conditions such as Parkinson’s or psychosis
Muscarinic antagonists
Injected and lasts 5-10 mins; binds irreversibly to cholinesterase
Edrophonium
Containdicated in narrow-angle glaucoma and BPH
Anticholinergics
Slow infusion and fast infusion have different results
Epinephrine
B blocker commonly used for hyperthyroidism
Propranolol
Only used in severe decompensative heart emergencies and pharmacological cardiac stress tests
Dobutamine
Precursor in the manufacture of meth
Pseudoephedrine (Sudafed)
Low dose: D1 activation
Higher dose: B1 stimulation
Highest dose: a1 stimulation
Dopamine (Intropin)
Their effect antagonizes the action of parasympathetic stimulation
Muscarinic antagonists
COPD DOC
Ipatropium
Giving this before norepinephrine inhibits the vagal reflex
Atropine
Very strong nucleophile that prevents “aging” of organophosphates
2-PAM
An organophosphate applied in the eye for long-term glaucoma emergency management
Echothiophate
Block allll the autonomic ganglia
Ganglion blockers
Hexamethonium
May cause severe HTN and stroke in otherwise healthy young adults
Cocaine
Epinephrine injection is contraindicated in people on this class of drugs
Beta Blockers
Block activation of the iris circular muscle by parasympathetic stimulation
Atropine
+ other Cholinergic antagonists
Blood pressure med that can come in a patch and can treat hot flashes
Clonidine (Catapres)
Considered to be non-depolarizing competitive antagonists
Ganglion blockers
Non-depolarizing neuromuscular blockers
Causes depletion of NE, dopamine and serotonin, low doses decrease BP, but you’ll get severe poops, and Parkinson’s like symptoms
Reserpine
In people with burns or have nerve degeneration, this drug can cause pronounced potassium release and cardiac arrest ☠️
Succinylcholine
What class improved stroke volume in obstructive cardiomyopathy?
B blockers
D1 selective agonist that is an alternative for dopamine
Fenoldopam (Corlopam)
Used in the emergency treatment of cardiac arrest and complete heart block
Epinephrine
Help smoking cessation
Varenicline (Chantix)
Direct-acting alpha agonist applied topically as a nasal spray for congestion
Oxymetazoline (Afrin)
Enters CNS very easily and is well-absorbed thru the skin
Scopolamine
Increases renin secretion from the kidney and has positive inotropic and chronotropic effects
Dobutamine
B1 selective agonist
Cause vasoconstriction in nasal mucosa which decreases nasal congestion
Phenylephrine
a1 selective agonist
Giving atropine before this drug will cause the vagal reflex to be inhibited and the HR will not increase
Norepinephrine (Levophed)
Used for anaphylactic shock, cardiac arrest
Epinephrine
Does not penetrate CNS UNTIL high doses are reached
Atropine
Tertiary amine; crosses BBB easily
Physostigmine
B3 agonist used for overactive bladder
Mirabegron
Decreases NE and Epi amounts in people with inoperable pheochromocytoma
Metyrosine (Demser)
If given in people taking Beta blockers, it will cause SEVERE HTN
***it is contraindicated!!!
Epinephrine
Prevents bradycardia from vagal stimulation during surgery
Glycopyrrolate
Old lady with glaucoma and bronchospasm will get what?
Betaxolol
An a2 agonist with less BP decrease than clonidine and is effective in treating muscle spasticity
Tizanidine (Zanaflex)
Prevents motions sickness
Scopolamine