Glaucoma and Epilepsy Drugs Flashcards
What is the main goal of glaucoma drugs?
Decrease intraocular pressure by decreasing the amount of aqueous humor by either inhibiting synthesis/secretion of humor or increasing the drainage)
What class of drugs are epinephrine and brimonidine?
alpha-agonists
What is the mechanism of epinephrine in treating glaucoma?
Decrease aqueous humor synthesis via vasoconstriction
What is the mechanism of brimonidine (alpha-2) in treating glaucoma?
Decrease aqueous humor synthesis
What is the side effect of epinephrine in treating glaucoma?
Mydriasis; do not use in closed angel glaucoma
What are the side effects of brimonidine use in glaucoma?
Blurry vision
Ocular hyperemia
Foreign body sensation
Ocular allergic reactions
Ocular pruritis
What class of drugs are timolol, betaxolol and carteolol?
ß-blockers
What is the mechanism of timolol, betaxolol and cartelol in glaucoma treatment?
Decrease aqueous humor synthesis
Side effects of timolol, betaxolol and carteolol in glaucoma treatment?
No pupillary or vision changes
What class of drugs is acetazolamide?
Diuretic
Mechanism of acetazolamide in glaucoma treatment?
Decrease aqueous humor synthesis via inhibition of carbonic anhydrase
What class of drugs are pilocarpine and carbachol?
Direct cholinomimetic
Mechanism of pilocarpine and carbachol in glaucoma treatment?
Increase outflow of aqueous humor via contraction of ciliary muscles and opening of trabecular meshwork
Side effects of pilocarpine and carbachol in glaucoma treatment
Miosis
Cyclospasm (contraction of ciliary muscle)
What class of drugs are physostigmine and echothiophate?
Indirect cholinomimetic (AChE inhibitor)
What is the mechanism of physostigmine nad echothiphate in glaucoma treatment?
Increased outflow of aqueous humor via contraction of ciliary muscles and opening of trabecular meshwork
Side effects of physostigmine and echothiophate use in treatment of glaucoma
Miosis and cyclospasm (contraction of ciliary muscle)
What class of drugs is latanoprost (PGF2alpha)
Prostaglandin
What is the mechanism of latanoprost in treating glaucoma?
Increase outflow of aqueous humor
What is a side-effect of latanoprost in glaucoma treatment?
Darkens color of iris
What kinds of epilepsy does phenytion treat?
Simple
Complex
Tonic-clonic
Absence
Status epilepticus
What is the mechanism of phenytoin in seizure treatment?
Increase sodium channel inactivation
Phenytoin is the 1st line treatment for which forms of epilepsy?
Tonic-clonic
Status epilepticus (1st line for prophylaxis)