02 Clinical care Flashcards
What is the most common negligence for malpractice
failure to diagnose
Schedule I definition
high abuse, no known medical use, lack of safety
Schedule II definition
high abuse, some medical use, high risk of dependency
Schedule III definition
lower abuse, medical use, moderate dependency risk
Schedule IV definition
limited abuse, high medical use, limited dependency risk
Schedule V definition
minor problems, may be available without Rx
What is an example of a Schedule I drug?
heroin
What is an example of a Schedule II drug?
hydrocodone
What is an example of a Schedule III drug?
valium
What is an example of a schedule IV drug?
codeine
What is an example of a Schedule V drug?
penicillin
Which drug schedules are ODs permitted to prescribe in California?
schedule III, IV and V, with the exception that we can Rx hydrocodone (schedule II)
Pregnancy Category A definition
no evidence of risk in women
Pregnancy Category B definiton
no evidence of risk in animals
Pregnancy Category C definition
evidence of toxicity in animal studies
Pregnancy Category D definition
risks may be about equal to the benefits of the drug
Pregnancy Category X definition
risks outweigh benefits of the drug
Anaphylaxis definition
a systemic hypersensitivity reaction with a substance to which the body has been previously sensitized
Off-Label definition
prescribing a drug for a non-FDA approved indication
What are the FDA requirements for drugs?
minimum 90% activity, greater than 18 month shelf life
What are the ocular routes of drug injection? (6)
subconjunctival, subtenon’s, retrobulbar, peribulbar, intracameral, intravitreal
Describe subconjunctival injections.
low dose, high local concentration, no compliance concerns; eg. treating a bacterial ulcer
Describe subtenon’s injections.
in sub-tenon’s space; often used to administer steroids for equatorial uveitis, CME, DME, or post cataract surgery
Describe retrobulbar injections.
into the muscle cone, high penetration risk, much less common today
Describe peribulbar injections.
safer but slower alternative to retrobulbar injection; anesthesia and akinesia
Describe intracameral injections.
into anterior chamber; can protect corneal endothelium and anterior chamber collapse during cataract surgery, or post-op lidocaine for comfort
Describe intravitreal injections.
into vitreous; treating endophthalmitis, retinitis, DME, AMD
Morgan Lens definition
extended irrigation system, like contact lens connected to an IV bag; eg. rinsing the eye with saline after a chemical burn
What types of ophthalmic drug formulations exist? (7)
gel, ointment, solid, solution, suspension, colloid, spray
What is the most common ophthalmic drug formulation?
solution
What type of drug formulation must be shaken?
suspension
Ointment definition
oil based; enhances retention time up to 6hrs when applied correctly
What are some examples of solid drug formulations?
contact lenses, collagen shields, filter strips, cotton pledgets, lacrisert, vitrasert, lucentis
How can sectoral dilation be achieved?
cotton pledgets or a schirmer strupsoaked with phenyl (pre-anesthetizing the eye reduces tear response for a better local effect)
What are the types of excipients/vehicles commonly used for ophthalmic drugs? (8)
emollient, demulcent, emulsifier, buffer, viscosity enhancers, osmoprotectant, stabilizers, tonicity stabilization
What is an example of an emollient?
mineral oil
Excipient definition
all elements of a preparation other than the active ingredient and preservative, ideally inert
What are examples of demulcent? (5)
HPMC, CMC, PEG, PG, glycerin
HPMC, CMC, PEG, PG and Glycerin are what type of excipient?
demulcent
Emulsifier definition
emulsifiers keep solids in liquids well dispersed
What are examples of emulsifiers? (6)
polyoxyl 40 searate, sorbitan tristerate, dimyristoyl phosphatidylglycerol, PVA, gellan gum, polyacrylic acid
Polyoxyl 40 Stearate, Sorbitan Tristerate, Dimyristoyl Pohsphatidylglycerol, PVA, Gellan Gum, and Polyacrylic acid are what type of excipient?
emulsifier
What are examples of buffers? (2)
borate, citrate
Borate and Citrate are examples of what type of exipients?
buffers
What are examples of viscosity enhancers? (6)
hydroxypropyl guar, sodium hyaluronate, xanthan gum, gellan gum (gelrite), polyacrylic acid (durasite), PVA
Hydroxypropl Guar, Sodium Haluronate, Xanthan Gum, Gellan Gum (Gelrite), Polyacrylic acid (Durasite), and PVA are examples of what type of vehicle?
viscosity enhancers
What are examples of osmoprotectants? (2)
erythritol, levocamitine
Erythritol and Levocamitine are examples of what type of vehicle?
osmoprotectants
What are examples of stabilizers? (2)
hydroxyalkyl-phosphonate, gellan gum
Hydroxyalkyl-phosphonate and Gellan Gum are examples of what type of vehicle?
stabilizers
What are examples of tonicity stabilization vehicles?
KCl, NaCl, CaCl, MgCl, ZnCl, sorbitol
KCl, NaCl, CaCl, MgCl, ZnCl, and Sorbitol are examples of what type of vehicle?
tonicity stabilization
What type of substances typically stabilize tonicity?
electrolytes
What are the four main types of preservatives?
chelators, chemical toxins, surfactants, oxidants
What do chelators do?
preservative with an affinity to bind metallic ions
Which preservative is a chelator?
EDTA
What type of preservative is EDTA?
chelator
What preservative is recognized for its risk of contact dermatitis?
EDTA
Which preservatives are chemical toxins? (3)
povidone (PVP), thimerosal, chlorobutanol
Which preservative is mercury-based?
thimerosal
What are the two categories of preservatice surfactants?
biguanides, quaternary ammonium compounds
What is the most common preservative used in topical ophthalmic drops?
benzalkonium chloride (BAK)
Which preservatives are biguanides? (4)
polyhexamethylene biguanide (PHMB), polyaminopropyl biguanide (PAPB), chlorhexidine, alexidine
PHMB, PAPB, Chlorhexidine, and Alexidine are what type of preservative?
biguanide surfactants
Which preservatives are quaternary ammonium compounds?
benzalkonium chloride (BAK), polyquaternium (quats)
BAK and Polyquaterium are wht type of preservative
quaernary ammonium compound surfactants
What are the two categories of disappearing oxidants?
borate complexes, chlorite complexes
What is the defining characteristic of Borate complexes?
pH inactivated
What are examples of Borate complexes? (3)
genteal, thera tears (sodium perborate), tears again (dissipate)
Genteal, Thera Tears, and Tears Again use what type of preservative?
borate complexes
What is the defining characteristic of Chlorite complexes?
light inactivated
What are examples of Chlorite complexes? (3)
allergan refresh (purite), blink (ocupure), brimonidine (purite)
Allergan Refresh, Blink, and Brimonidine use what type of preservative?
chlorite complexes
After how long can a re-capped preservative-free vial be used?
12 hours
Which drug is self-preserved?
moxifloxacin 0.5%
Which ophthalmic drug uses a yellow cap?
beta blockers
Which ophthalmic drug uses a dark blue cap?
beta blocker combos
Which ophthalmic drug uses a red cap?
mydriatics and cycloplegics
Which ophthalmic drug uses a dark green cap?
miotics
Which ophthalmic drug uses an orange cap?
carbonic anhydrase inhibitors (CAIs)
Which ophthalmic drug uses a gray cap?
non-steroidal antiinflammatories (NSAIDs)
Which ophthalmic drug uses a pink cap?
steroids
Which ophthalmic drug uses a tan cap?
anti-infectives
Which ophthalmic drug uses a teal cap?
prostaglandin analogs
Which ophthalmic drug uses a purple cap?
adrenergic agonists
What color cap would you find on a bottle of beta-blocker?
yellow
What color cap would you find on a bottle of beta blocker combo?
dark blue
What color cap would you find on a bottle of mydriatic or cycloplegic?
red
What color cap would you find on a bottle of steroid?
pink
What color cap would you find on a bottle of NSAID?
gray
What color cap would you find on a bottle of CAI?
orange
What color cap would you find on a bottle of anti-infective?
tan
What color cap would you find on a bottle of miotic?
dark green
What color cap would you find on a bottle of prostaglandin analog?
teal
What color cap would you find on a bottle of adrenergic agonist?
purple