Week 6: Rhinitis Flashcards
What is It?
inflammation and irritation of mucous membranes lining the nose
- most common problem with the nose and sinuses
- classified as allergic, non-allergic, and acute or chronic
- also affect eyes, throat, and ears
What does the presence of an allergen cause?
causes histamine release and other mediators from WBCs in the nasal mucosa.
>the mediators bind to blood vessel receptors causing capillary leakage, which leads to local edema and swelling
How does Allergic Rhinitis occur?
in response to exposure to allergens found in the environment, medications, foods, or occupational irritants
- the lining of the nasal mucosa becomes inflamed, congested and edematous
- mechanical obstructions within the nose or sinuses, such as polyps, nasal septal deviation, and hypertrophy of the nasal turbinate or sinus tumors, may also result in the development of rhinitis
Common environmental allergens
mold, dust mites, cockroach droppings, weeds, trees, and animal dander
Foods that may induce allergic rhinitis
peanuts, cows milk, nuts, eggs, and wheat
Allergic Rhinitis
categorized as perennial (occurring throughout the year) or seasonal
Non-allergic Rhinitis
- does not involve immune system
- example: common cold
- caused by a variety of viruses and is usually self-limiting unless bacteria infection occurs simultaneously
Clinical Manifestations
- nasal itching, sneezing, nasal congestion, and rhinorrhea (runny nose), itchy, watery-eyes, sore dry throat
- headache, fatigue, sleep disturbances, and cognitive impairment
Diagnosis
- based on history and symptoms
- dependent on the cause
- obtaining a history of onset of symptoms that focuses on the pattern, seasonal aspects, environmental exposures to allergens in the home or work, and precipitating factors serves as basis of determining treatment
Diagnostic Procedures
- in allergic rhinitis; allergy testing may be indicated, followed by a desensitizing regimen
- referral to an ears, nose, and throat specialist for assessment of nasal polyps, nasal septum deviation, and hypertrophy of the nasal turbinate or sinus tumors may be indicated
Medications
- Antihistamines
- Intranasal corticosteroids (most effective in allergic rhinitis)
- Decongestants
- antipyretic for fever
- antibiotics if bacterial infection
Complications
sedation, performance impairment, and anticholinergic effects such as dry mouth, constipation, and increased heart rate are common side effects of first generation anti-histamines
-can lead to obstructive sleep apnea (OSA)
Client Education
- appropriate use of medications
- avoidance of known allergens or triggers
- hand hygiene; preventing the spread of infection
Medication: First-generation antihistamine
-diphenhydramine (denadryl allergy)
Medication: Second Generation Antihistamine
-loratadine (Alavert, Claritin)