ENT + Skin Flashcards
Allergic Rhinitis:
-S/Sx
-Cold vs. Allergic Rhinitis
-Common Allergens
S/Sx: congestion, rhinorrhea (runny nose), sinus pressure, sneezing, itchy eyes
-Intermittent or chronic symptoms
Cold: from virus; symptoms of sneezing, runny nose, thick/dark mucus, sore throat, body aches; symptoms take about three days to appear and usually last for a week
Allergic Rhinitis: from allergen; symptoms can last days or months after contact w/ allergen; thin, clear mucus; can have postnasal drip
Common allergies: pollen, dust mite, animal dander, mold
Allergic Rhinitis:
-Non-pharmacological therapy
-Pharmacological TX
Non-pharmacological therapy:
-Avoidance of allergen exposure (IgE-mediated skin prick test can help identify allergens)
-Vacuuming
-Dust mites: removal of carpet and upholstered furniture, encasing pillows, mattresses, and box springs; washing bedding and soft toys in hot water weekly
-Viewing the air quality index (AQI) or pollen counts
-Wetting agents (ex. Ocean Little Remedies, Simply Saline): contain saline, propylene, or polyethylene glycol to provide moisture and reduce irritation to nasal passageways
-Nasal Irrigation (ex. NeilMed Sinus Rinse): isotonic or hypertonic saline solution to rinse out allergies and mucus, improve ciliar function, and reduce swelling –> mixtures can be premixed or need to be mixed w/ distilled water or previously boiled and cooled water (do NOT use tap: can cause infections)
Pharmacological TX:
-Chronic, moderate/severe symptoms: intranasal steroids (takes time to work)
-Milder, intermittent symptoms: oral antihsitamines (2nd gen preferred due to less sedation)
-Congestion present: decongestants
Intranasal Steroids:
-Drugs/Brands
-Which ones are OTC?
-TX
-Administration considerations
-AVEs
-Warnings
-Monitoring
Drugs: budesonide (Rhinocort Allergy), fluticasone (Flonase Allergy Relief, Flonase Semimist, Children’s Flonase, Xhance), fluticasone/azelastine (Dymista), triamcinolone (Nasocort Allergy 24HR, Nasocort Allergy 24HR Children), beclomethasone (Beconase AQ, Qnasl, Qnasl Children’s), cicleosnoide (Omnaris, Zetonna), flunisolide, mometasone (Nasonex 24HR Allergy), mometasone/olopatadine (Ryaltris)
OTC: budesonide, fluticasone, triamcinolone, mometasone
TX: first-line in moderate/severe chronic allergic rhinitis
-Budesonide, beclomethasone: preferred in pregnancy
Administration:
-Can take up to a full week for full relief
-Shake bottle well before each use
-Discard device after total number of labeled doses, even if the bottle does NOT feel completely empty
AVEs: epistaxis (nose bleeds), HA, dry nose, unpleasant taste, localized infection
Warnings:
-Avoid use if recent nasal septal ulcers, nasal surgery, or recent nasal trauma due to delayed wound healing
-High doses for prolonged periods can cause: adrenal suppression, decreased growth velocity in pediatrics, immunosuppression
-Caution in pts w/ cataracts and/or glaucoma: increased IOP, open-angle glaucoma, and cataracts have occurred with prolonged use
Monitoring: growth (pediatrics), vision changes, eye exams in long-term use, s/sx of oral thrush, and/or adrenal suppresion
-If using regularly for several months, recommend periodic nasal exams to evaluate for septal perforation or ulcers
First Generation Antihistamines in Allergic Rhinitis:
-Drugs/Brands
-Which ones are OTC?
-What at the effects in allergic rhinitis?
-Dosing for Benadryl
-Administration considerations
-AVEs
-Warnings
-CIs
Drugs: diphenhydramine (Benadryl), chlorpheniramine (Aller-Chlor), doxylamine (Unisom SleepTabs), clemastine, carbinoxamine
OTC: diphenhydramine, chlorpheniramine, doxylamine
Effects in allergic rhinitis: reduce symptoms of itching, sneezing, rhinorrhea –> LITTLE effects on congestion
Benadryl dosing
-Adults: 25mg PO Q4-6H or 50mg PO Q6-8H
-Age <6yo: do NOT use OTC unless directed by healthcare provider
Administration:
-Should D/C >/=72 hours prior to allergy skin testing
-Can cause photosensitivty: use sunscreen and wear protective clothing while taking
AVEs: somnolence, cognitive impairment, strong anticholinergic effects (dry mouth, blurred vision, urinary retention, constipation) and seizures/arrhythmias at higher doses, paradoxysal reaction in children (hyped up, not sedated)
Warnings:
-Avoid in elderly due to strong anticholinergic effects (Beers criteria) and children <2yo
-CNS depression and sedation
-Caution in CV disease, prostate enlargement, glaucoma, asthma, pyloroduodenal obstruction, and thyroid disease
-do NOT use w/ MAOIs (especially clemastine or carbinoxamine)
-Age restriction for OTC use: Benadryl in <6yo and doxylamine <12 yo)
CI: neonates or premature infants, breastfeeding (2nd gen preferred)
Second generation Oral Antihistamines in Allergic Rhinitis
-Drugs/Brands
-Brands when combined with pseudophedrine
-Which ones are OTC?
-Administration considerations
-AVEs
-Warnings
-CIs
Drugs: cetirizine (Zyrtec Allergy, Zyrtec Childrens Allergy), levocetirizine (Xyzal Allergy 24HR, Xyzal Allergy 24HR Childrens), fexofenadine (Allegra Allergy, Allegra Allergy Childrens), loratadine (Claritin, Claritin Childrens, Alavert), desloratadine (Clarinex)
Brand w/ Pseudophedrine: add -D (ex. Zyrtec-D, Allegra-D, Claritin-D)
OTC: cetrizine, levoceterizine, fexofenadine, loratadine
Administration:
-D/C >/=72 hours prior to allergy skin test
-Fexofenadine: take with water (NOT fruit juice due to decreased absorption), avoid w/ Al or Mg-containing products
-In pregnancy, loratadine and cetirizine preferred
-Cetirizine, levocetirizine: fast onset and may work best for some pts
AVEs: HA, somnolence can still be seen (more w/ ceterizine and levocetrizine; least sedating: fexofenadine and loratadine)
Warnings: can cause CNS depression/sedation especially w/ other sedating drugs, caution in elderly or renal/hepatic impairment
CIs (levocetirizine): end-stage renal disease (CrCl <10mL/min), hemodialysis, infants and children 6 months to 11 yo of age w/ renal impairment
Intranasal antihistamines that can be used w/ allergic rhinitis and role in therapy
-What age are these indicated in?
Azelastine (Astepro Allergy) and olopatadine (Patanase) - helps with congestion, can be combined w/ intranasal steroid
Age: 5 yo and older
Decongestants: Phenylephrine and Pseudophedrine
-Brands
-MOA
-Comparison in efficacy in allergic rhinitis
-Under federal law, Pseudophedrine is kept behind pharmacy counter because __________. The maximum amount allowed for purchase is ____ grams per day and ____ grams in a 30-day period.
-AVEs
-Warnings
-CIs
Brand:Sudafed PE (phenlephrine), Sudafed Nexafed or Zephrex-D (pseudophedrine)
MOA: alpha-adrenergic agonists (sympathomimetics) causing vasoconstriction to decrease sinus vessel engorgement and mucosal edema to treat sinus and nasal congestion
Efficacy: pseudophedrine is effective decongestant; phenylephrine has poor oral absorption and comes as nasal spray, but lasts for shorter time w/ more AVEs that oxymetazoline
-Onset about 15-60 minutes
Federal law: pseudophedrine stored behind counter due to being precursor to methamphetamine; max: 3.6g/day, 9g/30 days
AVEs: CV stimulation (tachycardia, palpitations, increased BP), CNS stimulation (anxiety, tremors, insomnia, nervousness, restlessness, fear, hallucinations), decreased appetite, dizziness, HA
Warnings:
-Avoid in children <2 yo (FDA) and <4 yo (packaging)
-Avoid in first trimester of pregnancy
-Caution in CV disease and uncontrolled HTN, hyperthyroidism (can worsen), DM (can increase BG), bowel obstruction, glaucoma (can increase IOP), BPH (can cause urinary retention), renal impairment, seizure disorder, and elderly
CI: use within 14 days of MAOIs
Intranasal Oxymetazoline and Phenylephrine for Allergic Rhinitis
-Brand for oxymetazoline
-MOA
-Onset of action
-AVEs
-Warnings
-CIs
Brand: Afrin (Oxymetazoline)
MOA: alpha-adrenergic agonists (sympathomimetics) causing vasoconstriction to decrease sinus vessel engorgement and mucosal edema to treat sinus and nasal congestion
Onset of action: 5-10 minutes
AVEs: rhinitis medicamentoas (rebound congestion if used longer than 3 days); nasal stinging, burning, and dryness; sneezing; trauma from tip of device
Warnings:
-do NOT use with MAOIs
-Caution in CV disease, uncontrolled HTN, thyroid disease, DM, and BPH
CI (oxymetazoline): do NOT use more than 3 days
Discuss additional medications used for Allergic Rhinitis:
-Intranasal Cromolyn
-Montelukast
-Intranasal Ipratropium
-Immunotherapy
Cromolyn (NasalCrom): OTC mast cell stabilizer for TX and prophylaxis – takes about 3-7 days to start improving and up 2-4 weeks for full effect (do NOT use PRN), safe in children >/=2 yo and pregnancy
Montelukast (Singulair): oral leukotriene receptor antagonist for asthma and allergic rhiniitis, commonly used in children, for allergic rhinitis reserve more as last line
Intranasal ipratropium (Atrovent nasal spray): effective for decreasing rhinorrhea by causing nasal dryness, but NOT for other symptoms
Immunotherapy: preventative for allergies by slowly increasing exposure to allergen and densensitizing immune system (recommended to treat for minimum of three years)
-Can be SC or SL
-First dose given in medical office to be monitor fpr at least 30 minutes (BBW: allergic rxn)
-If tolerated, take at home and all pts should have epinephrine auto-injector while on SL TX
-Oralair: 5 different grass pollen extracts, Grastek: Timothy grass pollen extract, Ragwitek: ragwed pollen extract, and Odactra: house dust mite allergen extract
Cold: TX and Natural Products
Natural Products:
-Zinc: possibly effective when used correctly by using at first sign of symptoms within 48 hours (do NOT use more than 5-7 days - long term can cause copper deficiency), nasal swabs or sprays can cause loss of smell
-Vitamin C (ascorbic acid): little to no efficacy for cold prevention, some data to show decrease in duration of cold (possibly effective per NatMed)
-Echinacea: rated possibly effective
-Check correct dose for products as many have variety of ingredients (ex. Airborne, Emergen-C)
Treatment: based on symptoms
-Productive cough: expectorants to thin mucus and move secretions up and out of respiratory tract –> questionable benefit
-Dry, nonproductive cough: cough suppressants
-Congestion, rhinorrhea: decongestants (systemic or nasal)
-Sore throat, body malaise, fever: analgesics/antipyretics (ex. APAP, ibuprofen - caution to NOT exceed maximum daily if multiple medications used)
Guafiensin:
-Brands
-MOA
-Administration considerations
-AVEs
Brands: Mucinex, Robitussin Mucus + Chest Congestion, Robafen)
-With dextromethorphan (Robafen DM, Robitussin DM)
MOA: thin mucus (for productive coughs)
Administration:
-Some formulations contain phenylephrine (avoid w/ PKU)
-OTC: do NOT use ER tablets in children <12 yo
AVEs: N/V (dose-related), dizziness, HA, rash, diarrhea, stomach pain
Dextromethorphan:
-Brands
-MOA
-Administration considerations
-AVEs
-Warnings
-CIs
Brands: Delsym, Robafen Cough, Robitussin Cough
-With guaifenesin: Robafen DM, Robitussin DM
MOA: cough suppressant for dry, nonproductive coughs –> high affinity along with opioids fo several regions of brain, including medullary cough center, suppressing cough reflex
-Other targets: acts as an SSRI, high doses: NMDA receptor inhibition (euphoria and hallucinations)
Administration:
-If product name has DM at end of it, contains dextromethorphan
-OTC: do NOT use in children <4yo
AVEs: N/V, drowsiness, CNS depression (especially w/ other sedating drugs)
Warnings: serotonin syndrome (if co-administered w/ other serotonergic drugs), use w/ caution in poor metabolizers of CYP2D6 or with CYP2D6 inhibitors, debillitated (sedated, confined to supine position)
CIs: do NOT use within 14 days of MAOIs
Codeine in Colds and Coughs:
-Control schedule
-MOA
-Administration considerations
-CIs
-BBWs
Control schedule:
-CII if single entity for pain
-CV if combination production for cough and cold
MOA: high affinity to several areas of brain, including medullary cough center to decrease cough reflex (cough suppressant for dry, nonproductive coughs)
Administration: FDA recommends avoiding codeine-containing cough and cold products for pts <18 yo
CIs: use in children <12 yo (any indication) or children <18 yo after tonsillectomy and/or adenoidectomy
BBW: respiratory depression and death in children following tonsillectomy or adenoidectomy and had evidence of ultra-rapid metabolizers for CYP2D6; deaths have occurred in nursing infants with ultra-rapid metabolizing mothers
Benzonatate:
-Brand
-MOA
-AVEs
-Warnings
Brand: Tessalon Pearls
MOA: cough suppressant -suppresses topical action on respiratory stretch receptors
AVEs: somnolence, confusion, hallucinations
Warnings: use in children <10 yo; accidental ingestion and fatal overdose has been reported
What are Benadryl’s various uses?
- Acute allergic rxns
- Prevention of allergic rxns
- Allergic rhinitis
- Cough - antitussive (cough suppressant) properties for dry, nonproductive cough
- Sleep
- Dystonic reactions - anticholinergic properties
- Motion sickness
Cough and Cold Combinations:
1. If the name contains D, PE, DM, and AC, what does this indicate?
- Brand for brompheniramine/pseudophedrine/dextromethorphan
- Brand for chlorpheniramine/hydrocodone
1.
-D: contains decongestant (ex. pehnylephrine, pseudophedrine –> Mucinex D = guaifenesin + pseudophedrine)
-PE: contains pehnylephrine (ex. Sudafed PE)
-DM: contains dextromethorphan (ex. Robafen DM)
-AC: contains codeine (ex. G Tussin AC = guaifenesin + codeine)
- Bromfed DM
- TussiCaps
Cough and Colds in Children:
-What to avoid in children and at what age
-General considerations
-Dosing in APAP and ibuprofen
Avoid:
-<2 yo: OTC cough and cold products (FDA), promethazine (FDA - fatal respiratory depression), topical menthol and camphor (package)
-<4 yo: OTC cough and cold products (package)
-<6 yo: OTC cough and cold products (AAP)
-<18 yo: codeine and hydrocodone-containing cough and cold products (FDA)
Considerations:
-Safe to recommend proper hydration, nasal bulbs for gentle suctioning, saline drops/sprays, vaporizers/humidifers, APAP, and ibuprofen
-Cough and cold products do NOT offer much symptom relief to young children w/ side effect risk (especially from multiple products)
-Topical products containing menthol (Vicks VapoRub) can be applied to chest and neck to open airway and suppress cough (never directly apply to nose)
APAP dose: 10-15mg/kg Q4-6H (do NOT exceed 5 doses in 24 hours)
-Infants drops/children’s liquid: 160mg/5mL
Ibuprofen dose: 5-10mg/kg Q6-8H (do NOT exceed 40mg/kg/day)
-Infant drops: 50mg/1.25mL
-Children’s liquid: 100mg/5m
General Ear and Eye Concepts:
1. What are the following sigs: AD, AS, AU, OD, OS, and OU?
- Can eye drops be used in the ear, and vice versa?
- In general, 1 drop = ______mL.
- How should ointments and gels be used for the eyes?
- D = right, S = left, A = ear, O = eye
- Eye drops can be placed in ear, BUT ear drops cannot be used in eye (needs sterile formulation)
- 0.05
- -Ointments: apply to conjunctival sac or over lid magins (for blepharitis) - can make vision blurry, do NOT use w/ contact lenses)
-Gels: with cap on, invert and shake once to get medication into tip before instilling into eye
Glaucoma:
-Open-angle versus closed-angle glaucoma
-TX goals
-TX
Open-angle glaucoma: most common, loss of visual field and damage to optic nerve w/o symptoms
Closed-angle glaucoma: sharp, sudden increase in IOP
TX goals: decrease IOP (normal range: 12-22mmHg)
TX:
-Increase aqueous humor outflow (move fluid out): prostaglandin analogs (most effective)
-Reduce aqueous humor production (make less fluid): beta-blockers (preferred if pt has one eye - since prostaglandins darken iris or thicken eyelash), carbonic anhydrous inhibitors
-Both: alpha-2 agonists
Drugs that can increase intraocular pressure (IOP)
-Anticholinergics (ex. antihistamines, oxybutynin, tolterodine, benztropine, scopolamine, trihexyphenidyl, TCAs)
-Decongestants (ex. pseudophedrine)
-Chronic steroids, especially eye drops (ex. prednisolone)
-Topiramate
Prostaglandin analogs in glaucoma
-Drugs/Brands
-MOA
-Dose frequency
-Adminstration considerations
-AVEs
-Warnings
Drugs: bimatoprost (Lumigan, Latisse), latanoprost (Xalatan, Xelpros), travoprost (Travatan Z), latanoprostene bound (Vyzulta), tafluprost (Zioptan), latanoprost/netarsudil (Rocklatan)
MOA: increase aqueous humor outflow
Dose: 1 drop QHS
Administration:
-Latisse: indicated only for eyelash growth
-Travatan Z, Xelpros: do NOT contain BAK (different preservative is used) and can be used in pts w/ previous rxn to BAK or dry eye
-Zioptan: comes as 10 single-use, preservative free-containers in foil pouch (discard after each use)
-Latanoprost, latanoprostene, and tafluprost: store in refrigerator before opening –> once opened, store at room temperature
AVEs: blurred vision, stinging, increased pigmentation of iris/eyelashes, eyelash growth/thickening, foreign body sensation
Warnings: darkening of iris, eyelid skin, and eyelashes; eyelash length and number can increase; contamination of multiple-dose solutions can cause bacterial keratitis
Beta-blockers in glaucoma
-Drugs/Brands
-MOA
-Dosing frequency
-Administration considerations
-AVEs
-CIs
Drugs: timolol 0.25% and 0.5% (Timoptic, Timoptic-XE, Istalol, Timolol GFS, Betimol, Timpotic Ocudose), betaxolol (Betoptic S), carteolol, levobunolol (Betagan)
MOA: reduce aqueous humor production
Dose:
-Tomolol: 1 drop QD or BID
-Timoptic-XE, Timolol GFS (Gels): QD
Administration:
-Gels: shake once before use and wait 10 minutes after administering other eye drops before inserting gel
-Cosopt PF: PF = Preservative Free –> packaged in single-use containers
-Some products contain sulfites which can cause allergic rxns
AVEs: burning, stinging, bradycardia, fatigue, bronchospasm (with non-selective: ALL except betaxolol), itching of eyes/eyelids, changes in vision, increased light sensitivity
CIs: sinus bradycardia;; heart block >1st degree (except in pacemaker); cardiogenic shock; uncompensated cardiac failure; bronchospastic disease
Cholinergics for glaucoma:
-Drugs/Brands
-MOA
-AVEs
-Warnings
Drugs: carbachol (Miostat), pilocarpine (Isopto Carpine)
MOA: increase aqueous humor outflow
AVEs: poor vision at night due to pupil constriction, corneal clouding, burning (transient), hypotension, bronchospasm, abdominal crmaps/GI distress
Warnings: caution in hx of retinal detachment or corneal abrasian
Carbonic Anhydrase Inhibitors for glaucoma:
-Drugs/Brands
-MOA
-TX
-AVEs
-Warnings
Drugs: dorlozamide (Trusopt), brinzolamide (Azopt), acetazolamide, methazolamide
MOA: reduce aqueous humor production
TX (acetazolamide): NOT often for glaucoma, but more for altitude sickness (PO)
AVEs:
-Eye drops: burning, blurred vision, blpeharitis, dry eye
-PO (acetazolamide): CNS effects (ataxia, confusion), photosensitivity, skin rash, anorexia, nausea, risk of hematological toxicities
Warnings: sulfonamide allergy (ends in -amide)