Drugs for Upper Resp (40) Flashcards
Cold
___ Infection that invades the respiratory tract –> ____ cell injury –> _____ response –> ____ & ____.
Viral…. Local… Inflammatory… Signs and Symptoms
Cold Signs and Symptoms:
____ blood flow to area
Local ____
Nasal ____
Increased… Edema… Discharge
Cold may develop ____ bacterial infection –> ____ of the throat –> ____ / ____ (sore throat).
Secondary… Irritation… Coughing/Pharyngitis
Allergic Rhinitis: \_\_\_\_ (environmental): 1. \_\_\_\_ 2. \_\_\_\_ 3. \_\_\_\_ dander
Allergen… Dust… Pollen… Animal
Allergic Rhinitis - Immunologic Response:
____ Response –> ____ Release –> Increased secretion of ____, which leads to ____ and ____.
Inflammatory… Histamine… Mucus… Congestion and Sneezing.
Drug classifications: \_\_\_\_ (H1 blockers) Decongestants \_\_\_\_ - cough relief Expectorants
Antihistamines… Antitussives
Histamines:
H1 receptors - ____ extra-vascular smooth muscle
H2 receptors - ___ in gastric secretions –> ____ ____.
Constricts… Increase… Peptic Ulcer
Histamines ___ arterioles, which increase ____ ____ to capillaries & tissues –> ____ & itching
Dilate… blood supply… swelling.
Antihistamines ____ action of histamine at ____ receptor sites… Tx: allergic ____.
block… H1 Histamine… rhinitis
1st Generation antihistamines cause ____ symptoms:
- Dry ____
- ____
- Blurred Vision
Anticholinergic… mouth… constipation
1st Generation antihistamine ex: diphenhydramine (Benadryl) could be taken p.o and IM/IV. Treats allergic ____ and prevents ____ sickness. Active ingredient is in ____ .
Rhinitis… motion… OTC sleep aids.
Side Effects of 1st Gen. antihistamines (anticholinergic effects):
- Drowsiness
- ____, fatigue
- ____ retention & ____
- Dry mouth
- Blurred vision
___ take with ___ or other CNS depressants.
Dizziness… Urinary… Constipation… DO NOT… alcohol
Contraindications of 1st Gen. Antihistamines:
- Acute ____ –> ____ effect on Resp tract –> may ____ secretion –> more ____ breathing.
- Narrow-angle ____
- ____, urinary retention.
- ____/nursing mother (inhibits lactation)
Asthma… Drying… thicken… difficult… BPH… Pregnant
2nd Gen. Antihistamines:
- Little to no effect on ____.
- More specific to ____ receptor.
- Fewer ____ symptoms.
Sedation… H1 histamine… Anticholinergic
Examples of 2nd Gen. Antihistamines cetirizine (Zyrtec) fexofenadine (Allegra) loratadine (Claritin) *** \_\_\_\_ may develop over time so switch between \_\_\_\_
Tolerance… Drugs.
Nursing Diagnoses:
- Ineffective ____ clearance r/t ____ congestion.
- Sleep ____ r/t frequent ____.
airway… nasal…deprivation…coughing.
Nasal Decongestants (sympathomimetic amines): \_\_\_\_ alpha-adrenergic receptors --> \_\_\_\_ in nasal mucosa --> Nasal mucous membranes \_\_\_\_ --> \_\_\_\_ fluid secretion (runny nose effect)
Stimulate… Vasoconstriction… Shrink… Decrease.
Nasal Decongestants:
Administer through nasal ___ / ____
spray / drops.
With frequent use of nasal decongestants:
____.
____ Congestion ( Nasal ____ instead of ____ and shouldn’t use more than ____-____ days)
Tolerance… Rebound… vasodilation… vasoconstriction…
Examples (sprays/drops): oxymetazoline HCl (Afrin) phenylephrine HCl (Neosynephrine) naphazoline HCl (Allerest)
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