Eyes, Ears, Nose & Skin Conditions Flashcards
Intranasal Steroids
-moderate - severe, chronic symptoms
–> ex: Flonase, budesonide, triamcinolone
SEs: headache, dry nose, pharyngitis, epistaxis, unpleasant taste, localized infection, nasal septal perforation
Antihistamines: 1st generation
-mild-moderate symptoms
–> oral: blocks histamine-1, reduce symptoms of itching, sneezing, rhinorrhea but not congestion
1st gen: diphenhydramine, chlorpheniramine, doxylamine
-more sedation and cognitive impairment
-strong anticholinergic effects (dry mouth, blurred vision, urinary retention, constipation)
-seizures/arrhythmias at higher doses
Warnings: caution in elderly, pts with prostate enlargement, glaucoma, CV disease, thyroid disease
-avoid in children < 2 y/o due to risk of SEs
Diphenhydramine
1st gen antihistamine, used for many indications:
-tx of acute allergic reactions
-prevention of allergic reactions
-allergic rhinitis
-cough
-sleep
-dystonic reactions
-motion sickness
–> due to its wide range of effects, it can worsen some disease states (BPH, constipation, dementia, glaucoma)
Antihistamines: 2nd generation
-cetirizine (Zyrtec), levocetirizine (Xyzal), fexofenadine (allegra), loratadine (Claritan)
-less sedation, response is pt specific
-Fexofenadine (allegra): seperate from juice and antacids by 2 hrs (decs absorption)
-avoid use with erythromycin and ketoconazole
Oral: most indicated in children 2 y/o + (desloratadine and levocetirizine may be used in > 6 month)
Nasal: 5 yrs +
Decongestants
Oral: Phenylephrine (Sudafed PE),- 10 mg q 4h Pseudoephedrine (Sudafed) - behind counter- 30-60 mg q4-6 h
Topical: Oxymetazoline (Afrin) - do not use for more than 3 days
CI: do not use within 14 days of MAOIs
Warnings/SE:
-caution in pts with CV disease (tachycardia, palpitaions, inc BP), hyperthyroidism, DM, bowel obstruction, glaucoma, BPH, elderly
-CNS stimulation (anxiety, tremors), dizziness, HA, anorexia
Combat Methamphetamine Epidemic Act of 2005
-limit sales of pseudoephedrine to 3.6 grams/day (120 tablets of 30 mg) and 9 grams in 30 days period (exception: 60 mg single pack)
-behind the counter, requires ID and signature
Topical intranasal decongestants
-Oxymetazoline (afrin), phenylephrine
Warnings: do not use with MAOIs or if have closed-angle glaucoma
SE: burning, stinging, sneezing - do not use for > 3 days or rebound congestion can occur
fast acting: within 5-10 mins
Intranasal mast cell stabilizer: Cromolyn (Nasalcrom)
-start using at onset of allergy season
-dosed every 6-8 hrs regularly (NOT PRN)
-symptom improvement can be seen within 4-7 days but max effect in 2-4 weeks
-good safety profile: can be used in children and pregnancy
Intranasal ipatropium bromide (Atrovent nasal spray)
useful to decrease rhinorrhea but not effective for other nasal symptoms
Oral antileukotrienes
-Montelukast (Singulair)
-similiar efficacy to oral antihistamines or PSE
-dosed once daily
Sublingual Immunotherapy
-for allergic rhibitis caused by specific allergens
-first dose must be given in docs office; subsequent doses at home
–> monitor pt for 30 mins for everes allergic reactions (BBW)
-give rx for autoinjectable epinephrine
Sublingual immunotherapy meds
–> Oralair: 5 diff grass pollen extracts - 1 tab is placed under the tongue daily, starting 4 months before and during grass szn
–> Grastek: Timothy grass pollen extract - 1 tab daily, starting 3 months before and during grass szn
–>Ragwitek: ragweed grass pollen extract
–> Odactra: house dust mite allergen - 1 daily
Expectorant: Guaifenesin
-decreases viscosity of mucus
-used to treat a productive, wet cough
-may make it easier to cough phlem out of airway tract
Cough Suppressant: Dextromethorphan (DM)
-cough suppressant:
–> indicated for dry, unproductive coughs
–> blocks the cough reflex center in the brain
–> acts as a serotonin reuptake inhibitor –> risk of serotonergic syndrome
High doses: NMDA receptor blocker = euphoric and hallucinogenic properties (2012 CA banned sales to minors
–> MDD: 120 mg/day
Cough Suppressants: Codeine
-indicated for dry, unproductive coughs
-acts centrally on respiratory center in the medulla to increase the cough threshold
C-II!!
Warnings: respiratory depression and death in children who recieved codeine after tonsel/adenoidectomy
CI: paralutic ileus, children < 12 y/o
SE: CNS depression, constipation, hypotension
CYP2D6 metabolism
Cough suppressants: Benzonatate (Tessalon Perles)
-suppresses cough by topical action or respiratory stretch receptors
Warnings: avoid in children < 10 y/o: accidental ingestion and fatal overdose
SE: sedation, confusion, hallucinations
Cough and Cold combo products: whats in a Name?
Cough = contains a cough suppressant
Congestion = contains an expectorant
D: decongestant (Mucinex D)
PE: Phenylephrine (Sudafed PE)
DM: Dextromethorphan (Robafen DM)
AC: Codeine (Robafen AC)
Pediatric cough and cold treatment: caution needed
-Children < 12 y/o: avoid codeine-containing products
-Children < 6 y/o: avoid ALL OTC cough and cold products
-Children < 4 y/o: avoid many OTC cough and cold products
-Children < 2 y/o: avoid all OTC cough and cold product, avoid promethazine, avoid topical menthol and camphor
Dosing od Tylenol and Motrin in Peds
-Acetaminophen
–> 10-15 mg/kg Q4-6 hrs
-do not exceed 5 doses in 24 hrs
-infant drops/childrens liquid - 160 mg/5mL
Ibuprofen
–> 5-10 mg/kg Q6-8H
-do not exceed 40 mg/kg/day
-infant drops = 50 mg/1.25 mL
-childrens liquid: 100 mg/5 mL
Eye and ear formulations
- 1 drop - 5 mL
-suspension: shake well
-Ointments: apply to the conjunctive sac or over lid margins. ointments can make vision blurry, do not use with contact lenses
-Gels: with cap on, invert and shake once to get the medication into the tip before instilling into the eye
Ear & Eye rx interpretations
AD: right ear
AS: left ear
AU: each ear
OD: right ear
OS: left ear
OU: each eye
Drugs that can increase Intraoccular pressure
-anticholinergics (oxybutynin, tolterodine, benztropine, trihexyphenidyl, TCAs)
-cough, cold, and motion sickness medications (antihistamines, scopolamine)
-chronic steroids, especially eye drops such as prednosolone (PredForte)
-Topiramate (Topamax)
Glaucoma Treatment Goal: Decrease IOP
-reduce aqueous humor production (make less fluid)
–> BBs (timolol)
–> carbonic anhydrase inhibitors (dorzolamine)
-increase aqueous humor outflow (move fluid out)
–> prostaglandin analogs, like latanoprost
- or do both: often achieved with add-on treatment
–> alpha-2 agonists (brimonidine)
Prostaglandin Ananlogs
-increase aqueous outflow, decrease IOP ~30%
-dosed 1 drop QHS
–> Bimatoprost (Lumigan)
–> Latanoprost (Xalatan)
–> Travoprost (Travatan Z)
–> Latanoprostene bunod (Vyzulta)
–> tefluprost (Zioptan)
Warnings:
-darkening of the eye, skin, and eyelashes, thick eyelashes
-Benzalkonium chloride can be irritating or cause contact lens discoloration
Beta Blockers for Glaucoma
-reduce aqueous humor production, decrease IOP ~22% (non-selective)
-dosed 1 drop daily or BID
–> Timolol (Timoptic)
+ dorzolamide (Cosopt)
+ brimonidine (Combigan)
–> Betaxolol
–> Carteolol
Warnings: cardiac, pulmonary, BAK warnings
Other meds to treat glaucoma
–> cholinergics- increase aqueous outflow - carbachol (Isopto Carbachol, Miostat) and pilocarpine (Isopto Carpine)
–> Carbonic anhydrase inhibitors: reduce aqueous humor production - dorzolamide (Trusopt) and brinzolamide (Azopt)
–> adrenergic alpha-2 agonists: increase outflow AND reduce production - Brimonidine (Alphagen P), timolol/Brimonidine (Combigan), Brinzolamide/Brimonidine (Simbrinza) (SE: sedation/CNS depression)
–> Rho kinase inhibitor: increase outflow- Netarsudil (Rhopressa)
Conjunctivitis symptoms and treatment
“pink eye”
-causes: viral, bacterial, allergic, irritant
Symptoms: iching, burning, redness, swelling
-usually self limiting
Treatment:
–> viral: none
–> Bacterial: moxifloxacin (Vigamox), Neomycin/Polymyxin B/Dexamethasone (Maxitrol), Ofloxacin (Ocuflox), Trimethoprim/Polymyxin B (Polytrim)
–> Allergic: cromolyn, azelastine, Olopatadine (Pataday), Ketotifen (Alaway, Zaditor)