Neuro and Psych Drugs Flashcards
Drugs to Treat Glaucoma (classes)
- Goal is to decrease humor production, increase outflow, or open angle.
- Beta Blockers (timolol, betaxolol, carteolol)
- PGF2 Agonists (Latanaprosct)
- Diuretics (CA inhibitors) (acetazolamide)
- Alpha agonists (epinephrine, Brimonidine)
- Cholinomimetics (Pilocarpine, Carbachol, Phyostigmine, echothyophate)
Timolol, Betaxolol, Carteolol
- Beta 2 blockers prevent humor synthesis from the ciliary body
- S/E: None
Latanaprosct
- PGF2a agonist increases humor outflow
- S/E: darkens the eye
Acetazolamide
- Inhibits Cabonic Anhydrase thus decreasing humor production
- S/E: None
Epinephrine
- Constricts blood vessels and decreases humor production
- S/E: Do not use in closed angle as can worsen closure. Causes mydriasis.
Brimonidine
- Alpha 2 agonists, autoreceptor.
- S/E: Blurry vision, occular foreign body and pruritis
Pilocarpine and Carbachol
- Muscarinic agonists cause constriction of pupillary muscle and increased outflow of aquesous humor
- Drug of choice for acute angle closure glaucoma.
- S/E: Miosis and cycloplegia (Ciliary muscle spasm)
Physistigmine, Echothiophate
- AchE inhibitors (echothiophate is irreversible), leading to cholinomimetic actions.
- Constriction of ciliary muscle and opening of outflow
Opiods
- Act by stimulating mu (and other receptors) on inhibitory interneurons. Lead to stimulation of Gi receptors on pain and other neurons leading to a decrease in Ca and increase in K in the cleft, thus a decrease rate of firing.
- Decreases stimulatory hormones (Sub P, Ach, NE, 5-HT)
- Common S/E: Miosis, Constipation (occur early) respiratory depression (late). Additive CNS depression with other drugs.
- Toxicity treated with naloxone. Never give O2 because respiratory drive is based on O2 not CO2
Morphine, Fentanyl, Heroin
-Classical pain relievers
Coedine, dextromethorophan
-Used as antitussives
Loperamide, Diphenoxylate
-Antidiahrreals
Miperidine
-Decreased GI effects
Methadone
Long half life means lower abuse potential, often given to treat addicts
Butrophanol
- Partial agonist of mu and kappa. Weaker pain effect but lower abuse potiential and lower risk of respiratory depression
- If given in the context of full agonist, will act as blocker and may precipitate withdrawl
Bupronorphine
-Partial mu agonist, usually given with naloxone to treat opiod withdrawl
Tramadol
- Weak Mu agonist and also blocks NE and 5-HT uptake
- Used as a more mild analgesic
- Decreases siezure threshold. In the context of a patient with electrolyte imbalances may precipitate a siezure.
Clonidine
-Centrally acting alpha 2 agonist (auto receptor) that can be used to minimize opiate withdrawl symptoms
Generalized Siezures
- Phenytoin, Carbemezapine, Valproic Acid
- Lamotrigine, gabapentine, topirimate, levatiracetam
Status Epilepticus
- Benzodiazepines (diazepam (long), lorazepam(med))
- Phenytoin is used as prophylaxis
Partial
Carbemazapine
-All others second line
-Absence
- Ethosuximide
- Valproic acid 2nd line
Nueropathic pain
gabapentin
Migranes
Topirimate