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Pharm - Rhinitis
Rhinitis
154
Pharmacology
Graduate
03/05/2010

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Cards

Term
What are the 3 types of allergic rhinitis?
Definition
episodic, seasonal (intermittent), and perennial (persistent)
Term
What is rhinitis medicamentosa?
Definition
drug-induced rhinitis - caused by using a nasal decongestants for longer than 2-3 days
Term
Name 5 causes of non-allergic rhinitis.
Definition
Infection, idiopathic or vasomotor, drug-induced, hormonal, or anatomical abnormalities
Term
In what age group is the highest incidence of allergic rhinitis?
Definition
age 15-25
Term
What % of rhinitis patients are symptomatic > 4 months/year?
Definition
50%
Term
What % of patients are symptomatic > 9 months/year?
Definition
20%
Term
What % of rhinitis is purely allergic?
Definition
43%
Term
What % of rhinitis is purely non-allergic?
Definition
23%
Term
What % of rhinitis is mixed allergic and non-allergic?
Definition
23%
Term
What % of rhinitis has an allergic component?
Definition
57%
Term
What % of rhinitis has a non-allergic component?
Definition
77%
Term
Name 6 predisposing factors for allergic rhinits.
Definition
1. asthma
2. atopic dermatitis
3. family history of allergy
4. exposure to second hand smoke
5. occupational/environmental exposures
6. early introduction of formula and foods
Term
What is 1 of the top 10 reasons for patients to present to primary care physicians?
Definition
rhinitis
Term
What % of the population is affected by rhinitis?
Definition
100%
Term
When is it important to determine the etiology of rhinitis and why?
Definition
With chronic symptoms - it helps guide therapy.
Term
What is allergic rhinitis?
Definition
a symptomatic disorder of the nose induced by IgE-mediated inflammation after allergen exposure
Term
What are the symptoms of allergic rhinitis?
Definition
rhinorrhea, nasal obstruction, nasal itching, and sneezing
Term
Name 3 comorbidities of allergic rhinits?
Definition
asthma, conjunctivitis, and rhinosinusitis
Term
What happens during sensitization to an allergen?
Definition
IgE directed at specific proteins (allergen) are produced and mast cells covered in this IgE presents in the nasal mucosa
Term
What happens during exposure to allergens (after sensitization)?
Definition
allergens elute across the mucous membrane and bind IgE on the mast cells; this triggers an allergic response
Term
What happens in the early phase response of the allergic reaction?
Definition
IgE antibodies on mast cells are cross-linked and the mast cells degranulate - releasing histamine and chemical mediators. Arachidonic acid metabolites are newly produced following activation.
Term
What seasonal allergen is likely the cause of allergic rhinitis in the spring?
Definition
tree pollens
Term
What seasonal allergen is likely the cause of allergic rhinitis in spring to late summer?
Definition
grass pollens
Term
What seasonal allergen is likely the cause of allergic rhinitis in late summer to early fall?
Definition
weed pollens
Term
What are some causes of perennial allergic rhinitis?
Definition
overlapping allergies, dust mite fecal proteins, animal dander, cockroaches, or mold
Term
T/F
There may be a genetic component to allergic rhinitis.
Definition
True
Term
T/F
Allergic rhinitis sufferers may have an inherited predisposition to phenotype 2 helper T (H2) cells.
Definition
True
Term
What type of patients exhibit exaggerated responses to normal substances?
Definition
atopic patients
Term
Name 9 aspects of the early phase response of the allergic reaction.
Definition
stimulation of irritant receptors (sneezing), pruritis, vascular permeability, mucosal permeability, smooth muscle contraction ("obstruction"), influx of inflammatory cells, mucus secretion, chemotaxis, airway permeability
Term
When does the late phase response begin?
Definition
4-8 hours after allergen exposure
Term
What causes the late phase response of an allergic reaction?
Definition
cytokines released by mast cells
IL-3, 4, 5, 6, 8
Term
What happens during the late phase response of the allergic reaction?
Definition
profound infiltration and activation of migrating cells - this causes obstruction and hyperresponsive inflamed mucosa
Term
What is the predominant source of histamine in the late phase reaction of an allergic reaction?
Definition
basophils
Term
What is hyperresponsive inflamed mucosa?
Definition
irritated mucosa that responds to any irritant or responds to lower levels of the allergen
Term
Why is it important to treat intermittent (seasonal) allergic rhinitis prophylactically?
Definition
To avoid hyperresponsive inflamed mucosa - get ahead of it so that you can treat it more easily
Term
Name 4 indications for allergy testing.
Definition
1. ID of allergens
2. chronic or recurrent symptoms
3. symptoms that are not controlled by avoidance and medication
4. need for immunotherapy (meds not tolerated or cost of meds is prohibitive)
Term
What are allergic shiners?
Definition
Dark areas around eyes caused by allergies; There is little correlation between symptoms and size
Term
Name 10 possible signs that are in conjunction with allergic rhinitis.
Definition
1. allergic shiners
2. watery eyes, itchy
3. transverse nasal crease - allergic salute
4. pale blue, edematous turbinates
5. clear, watery nasal discharge (bilateral)
6. lymphoid hyperplasia
7. nasal scrapings show eosinophils under microscope
8. blockage of the eustachian tubes
9. cough
10. pain on deep palpation of the sinuses
Term
When do you read a positive control for puncture/prick testing for allergies?
Definition
10 minutes
Term
When do you read allergens for puncture/prick testing for allergy testing?
Definition
15-20 minutes
Term
What is considered a positive allergen response?
Definition
at least 3 mm wheal
Term
Why are positive and negative controls in allergy testing important?
Definition
validates the skin response
Term
What does a positive negative control mean? (reaction to negative control - saline)
Definition
dermagraphism - physical urticaria
Term
What does a negative positive control mean? (not reacting to histamine)
Definition
medication reaction - use of antihistamine prior to testing
OR hypoactive skin
Term
Explain the grading for multitest response.
Definition
0 - no reaction to 1-3 mm wheal
1+ - erythema with 3 mm wheal
2+ - erythema with 5 mm wheal
3+ - erythema with 7-10 mm wheal
4+ - erythema with > 10 mm wheal
5+ - erythema with > 10 mm wheal with pseudopods
Term
What are the 4 categories of treatment for allergic rhinitis?
Definition
I. Avoidance of ID'd allergens
II. Pharmacotherapy
III. Immunotherapy
IV. Surgery
Term
How do you avoid dust mites if allergic?
Definition
Use plastic covers and vacuum frequently
Avoid overstuffed chairs, curtains, stuffed animals, dust-collecting boxes under bed, etc.
Term
How do you avoid cockroaches if allergic?
Definition
poison
Term
What % of atopic patients will have a + skin prick test to cats?
Definition
72%
Term
What % of people will have a + skin prick test to dogs?
Definition
36%
Term
What % of people have a + skin prick test to dust mites?
Definition
61%
Term
What are people allergic to from pets?
Definition
animal dander - small protein particles
Term
What causes animal dander to become airborne?
Definition
vacuuming, walking on carpeted floors, etc.
Term
Name some realistic advice for allergic pet owners.
Definition
Make pet an outside pet, keep pet out of bedroom and confined to a non-carpeted area with HEPA filter, etc.
Term
Is washing a cat to reduce allergies realistic?
Definition
No, they return to baseline after only 3 hours
Term
Effective/Not
Confine animals to non-carpeted area with HEPA.
Definition
Effective
Term
Effective/Not
Remove carpeting - it accumulates 100x more allergen than polished floors.
Definition
Effective
Term
Effective/Not
Wash laundry at 60 C with one rinse, any temp with 2 rinses, or use steam washing machine to reduce allergens.
Definition
Effective
Term
Effective/Not
Use a face mask for vacuuming or cleaning litter box.
Definition
Effective
Term
Effective/Not
Use tightly woven fabrics for bedding covers to capture dander.
Definition
Effective
Term
Effective/Not
Limit or remove fabric covered furniture.
Definition
Effective
Term
Effective/Not
Neuter male pets or select female pets.
Definition
Effective
Term
Effective/Not
Require passive carries of animal dander to change clothes before exposure to patient.
Definition
Effective
Term
Effective/Not
HEPA vaccum.
Definition
Not
Term
Effective/Not
Washing pets with water or shampoo.
Definition
Not
Term
Effective/Not
Steam cleaning carpet or upholstery.
Definition
Not
Term
Effective/Not
Oral agents/sprays to reduce animal shedding.
Definition
Not
Term
Effective/Not
Wash hands after petting animal and before touching face.
Definition
Maybe
Term
Effective/Not
MERV 12 filters on HVAC system
Definition
Maybe
Term
Effective/Not
HEPA free standing unit
Definition
Maybe
Term
Effective/Not
6 air exchanges per hour in the home.
Definition
Maybe
Term
Effective/Not
Tannic acid spray for carpeting or upholstery.
Definition
Maybe
Term
Effective/Not
Use of a multiple intervention approach.
Definition
maybe
Term
AR/ VMR/ Both
Intranasal corticosteroid
Definition
Both
Term
AR/ VMR/ Both
Intranasal antihistamine
Definition
Both
Term
AR/ VMR/ Both
oral antihistamine
Definition
AR
Term
AR/ VMR/ Both
Decongestant
Definition
VMR
Term
AR/ VMR/ Both
cromolyn
Definition
AR
Term
AR/ VMR/ Both
Montelukast
Definition
AR
Term
AR/ VMR/ Both
Ipratropium bromide
Definition
VMR
Term
AR/ VMR/ Both
nasal saline
Definition
Both
Term
AR/ VMR/ Both
Oral corticosteroids
Definition
AR
Term
What is the treatment plan for episodic AR?
Definition
treat the symptoms

nasal decongestant, nasal antihistamine, oral antihistamine, eye drops, or nasal saline
Term
What is the treatment plan for mild persistent allergic rhinitis?
Definition
1 regular medication

nasal corticosteroid or nasal antihistamine

monetlukast, ipratropium bromide
Term
What is the treatment plan for mild to moderate persistent allergic rhinitis?
Definition
2 regular medications

nasal corticosteroid and nasal antihistamine

oral antihistamine, montelukast
Term
What is the treatment plan for moderate to severe allergic rhinitis?
Definition
2-3 medications

nasal corticosteroid and nasal antihistamine

montelukast, ipratropium bromide, oral antihistamine, nasal saline
Term
What is the treatment plan for severe persistent allergic rhinitis?
Definition
continue all regularly used medications and add short term use corticosteroids
Term
How long should you use corticosteroids to treat severe persistent allergic rhinitis?
Definition
Dose packs for 5-7 days
4x per year (no more than every 3 months)
Term
Name 5 OTC nasal decongestants.
Definition
1. phenylephrine
2. naphazoline
3. tetrahydrozoline
4. oxymetazoline
5. xylometazoline
Term
What are possible side effects of OTC nasal decongestants?
Definition
rebound vasodilation and rhinitis medicamentosa
Term
How do OTC nasal decongestants work?
Definition
stimulate the alpha-adrenergic receptors causing constriction of the blood vessels and engorgement of the vessels within the sinus is reduced, relieving the "obstructed" sensation
Term
What are the physiologic effects of nasal saline?
Definition
directly cleanses the nose, removes inflammatory mediators, and improves mucociliary function
Term
What % improvement in symptom can be seen in AR patients by adding nasal saline
Definition
64%
Term
What % of nasal saline users report side effects?
Definition
< 10%
Term
What are some possible side effects of nasal saline use?
Definition
ear fullness, stinging sensation, and rarely, epistaxis
Term
What prescription eye drops can be used to relieve ocular itching?
Definition
ketorolac
Term
ketorolac
Definition
prescription NSAID eye drop
relieves ocular itching
Term
phenylephrine
Definition
OTC nasal decongestant
Term
naphazoline
Definition
OTC nasal decongestant
Term
tetrahydrozoline
Definition
OTC nasal decongestant
Term
oxymetazoline
Definition
OTC nasal decongestant
Term
xylometazoline
Definition
OTC nasal decongestant
Term
ketotifen
Definition
OTC
antihistamine and mast cell stabilizer
Term
epinastine
Definition
Rx
antihistamine and mast cell stabilizer
Term
naphazoline + antazoline
Definition
antihistamine and vasoconstricter
limit to 2-3 days because of the naphazoline
Term
naphazoline + pheniramine
Definition
antihistamine and vasoconstrictor
limit to 2-3 days because of naphazoline
Term
T/F
When using eye drops to treat AR symptoms, combination products work better than individual agents.
Definition
True
Term
diphenhydramine
Definition
1st gen oral antihistamine
causes drowsiness
Term
chlorpheniramine
Definition
1st gen oral antihistamine
less drowsy than diphenhydramine
Term
brompheniramine
Definition
1st gen oral antihistamine
Term
clemastine
Definition
1st gen oral antihistamine
Term
How do first gen oral antihistamines work?
Definition
competitively blocks the effects of histamine at the H1 receptor sites; does not activate the H1 receptor; nonselective - cross the blood brain barrier
Term
hydroxyzine
Definition
Rx
1st gen oral antihistamine
antiemetic, sedative, anxiolytic
Term
T/F
First gen oral antihistamines cross the blood brain barrier because they are lipid soluble.
Definition
True
Term
What cardiovascular effects do first gen oral antihistamines have?
Definition
increase BP and cause prolonged QT interval
Term
loratidine
Definition
2nd gen oral antihistamine
Term
fexofenadine
(dose)
Definition
2nd gen oral antihistamine
> 12 180 mg QD
doesn't have a lot of drug-drug interactions
Term
cetirizine
(dose)
Definition
2nd gen oral antihistamine
2 mo.s-5 yrs 2.5 mg PO QD
Term
desloratidine
Definition
2nd gen oral antihistamine
Term
levocetirizine
(dose)
Definition
2nd gen oral antihistamine
> 6 yrs 5 mg PO QPM
Term
What is the mechanism of action of second generation oral antihistamines?
Definition
competitively blocks the effects of histamine at H1 peripheral receptor sites; does not activate the H1 receptor; selective - do not cross blood-brain barrier
Term
T/F
There are cardiovascular effects produced by second gen oral antihistamines.
Definition
False
Term
Name 3 anticholinergic effects of second gen oral antihistamines.
Definition
1. drying effect - nasal, dec. lacrimal hypersecrection (watery eyes)
2. dry mouth
3. difficulty voiding urine
Term
What types or antihistamines should BPH patients avoid? Why?
Definition
2nd gen oral antihistamines; can cause difficulty voiding urine
Term
How are second gen nasal antihistamines dosed?
Definition
1-2 sprays each nostril BID
Term
azelastine hydrochloride
(saline)
Definition
2nd gen nasal antihistamine
bitter taste
approved for age 5 and up
Term
azelastine hydrochloride
(sucralose/sorbitol)
Definition
2nd gen nasal antihistamines
approved for age 12 and up
Term
olopatidine
Definition
2nd gen nasal antihistamine
age 12 and up
Term
fluticasone propionate
Definition
nasal steroid
seasonal and perennial allergic and nonallergic rhinitis
Term
fluticasone furoate
(dose)
Definition
nasal steroid
2-11 years: 1 spray per nostril QD-BID
Adults: 2 sprays per nostril BID
Term
flunisolide
Definition
nasal steroid
Term
triamcinolone
Definition
nasal steroid - AQ prep
Term
mometasone furoate
(dose)
Definition
nasal steroid - AQ prep
2-11 years: 1 spray each nostril QD
adults: 2 sprays each nostril QD
Term
budesonide
Definition
nasal steroid - AQ prep
Term
beclomethasone diproponate
Definition
nasal steroid - AQ prep
Term
ciclesonide
Definition
nasal steroid - AQ prep
Term
What % of patients on nasal steroids experience epistaxis?
Definition
10%
Term
Why might you not want to use beclamethasone in pediatric patients?
Definition
delayed height attainment
Term
What medications should be avoided in glaucoma patients and why?
Definition
nasal steroids - may increase intraocular pressure
Term
T/F
Nasal steroids may cause posterior subscapular cataracts.
Definition
True
Term
cromolyn sodium
Definition
mast cell stabilizer
begin 1 week before to prevent symptoms of allergic rhinits
Side effects: nasal stinging, sneezing
Term
pemirolast
Definition
mast cell stabilizer
Term
nedocromil
Definition
mast cell stabilizer
Term
lodoxamide
Definition
mast cell stabilizer
Term
ipratropium bromide
Definition
anticholinergic agent
side effects: nasal dryness, epistaxis, headache
Term
montelukast
(dose)
Definition
leukotriene receptor blocker
2-5 years - 4 mg PO QHS
6-14 years - 5 mg PO QHS
Adults - 10 mg PO QD
Term
zafirlukast
Definition
leukotriene receptor blocker
hepatotoxicity
Term
zileuton
Definition
leukotriene receptor blocker
hepatotoxicity
Term
How do leukotriene receptor blockers work?
Definition
they prevent the action of leukotriene in increasing the inflammatory response to allergens
Term
When is immunotherapy used?
Definition
when optimal avoidance measures and medication therapy are insufficient to control symptoms - or if medications are too expensive or will be so long term that they will become expensive
Term
How is immunotherapy done?
Definition
allergy testing to ID triggers then desensitization to allergens
Term
What are the outcomes of immunotherapy?
Definition
reduces the need for excessive use of medications to control symptoms, decreases the development of new allergies, and reduces the risk of developing asthma
Term
When is an ENT referral ndicated?
Definition
Symptoms are not resolved by other treatments
Term
When is surgery indicated?
Definition
nasal obstruction from polyps, severe septal deviation, adenoidal hypertrophy
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