Respiratory Drugs: Anti-Histamines Flashcards
This patient has to avoid a lot of negative food and drug interactions when prescribed this medication.
What medication have this drug interaction?
Diphenhydramine/Benadryl - 1st Generation Antihistamine
Hypersensitivity is an allergy. The allergen attaches to _________ that are located on target cells in the host tissue.
H1 receptors
This medication can be given Sub Q for local reaction after a medication has infiltrated and it will make that go away.
Diphenhydramine/Benadryl 1st and 2nd Generation
Less drowsiness
What medication have this therapeutic effect?
Fexofenadine / Allegra - 2nd Generation Antihistamine
Histamine contributes to the inflammatory response by causing inflammation this results in what three physiological changes?
Vasodilation which causes increased blood flow to the affected area.
Increased vascular permeability which causes edema.
Constriction of bronchial smooth muscle which decreases lumen of airway.
Drowsiness (Caution - No Driving)
Many anti-cholinergic side effects > Inhibits Salivation Lacrimation Urination and Defecation (SLUD).
What medication has these side effects?
Diphenhydramine/Benadryl - 1st Generation Antihistamine
What is the therapeutic classification of Fexofenadine / Allegra ?
2nd Generation Antihistamine
Increased CNS depression with other CNS depressants
What medication have this drug interaction?
Diphenhydramine/Benadryl - 1st Generation Antihistamine
Study Tip: CNS Depressants
Ex. Alcohol, Narcotics, and Barbiturates
These increase vasodilation, vascular permeability, and bronchoconstriction.
What inflammatory modulator has this effect in the body?
Prostaglandins
Study Tip: This inflammatory mediator is derived from a chemical called arachidonic acid. Also increases platelet aggregation (clotting), and inhibition of gastric acid secretion (constipation). Also stimulates pain.
Give IM in large muscle (Not given in the deltoid. Where is it administered?)
What medication have these nursing interventions?
Diphenhydramine/Benadryl - 1st Generation Antihistamine
Vastus Lateralus
Used to treat seasonal allergies
What medication have this therapeutic effect?
Fexofenadine / Allegra - 2nd Generation Antihistamine
Most important activator of the inflammatory response?
Mast Cells
Pros: Can decrease nasal itching.
Cons: Common in many OTC cold medications can be bad for patients with a respiratory infection.
What medication has these side effects?
Diphenhydramine/Benadryl - 1st Generation Antihistamine
Study Tip: This medication is bad for patients with a respiratory infection because you want the patient to be able to clear the secretions from the airway. Can prevent the patient from getting better.
_______ medications inhibit the inflammatory response.
Antihistamine
Fewer anti-cholinergic side effects. Longer halflife. Can be taken once a day.
What medication has these side effects?
Diphenhydramine/Benadryl - 2nd Generation Antihistamine
Zyrtec
What is the generic name of this 2nd Generation Antihistamine medication?
Saterazine
Less anticholinergic effects
What medication have this therapeutic effect?
Fexofenadine / Allegra - 2nd Generation Antihistamine
_________ that are located in the skin regulate vascular permeability. They do not have cell to cell contact but it modulates the behavior of the cells (Eosinophils, Neutrophils, Basophils, T-cells, and Langerhans cells) because they release the modulators into the blood stream.
Mast cells
Prevention and Treatment of Allergic rhinitis (Irritation of the Nose) and Nasal Itching
What medication have these therapeutic effects?
Diphenhydramine/Benadryl - 1st Generation Antihistamine
Avoid driving (NO FORKLIFTS) when taking this medication Avoid alcohol when taking this medication After taking medication use sugarless candy for dry mouth (to increase salivation) What medication have these nursing interventions?
Diphenhydramine/Benadryl - 1st Generation Antihistamine
Study Tip: These are examples of patient education.
PSNS Antagonist.
Causes dry mouth and decreases GI (constipation and urinary retention), Eye (no tears), and Oral secretions.
What medication has these side effects?
Diphenhydramine/Benadryl - 1st Generation Antihistamine
Study Tip: This medication is an Anticholinergic medication