Upper Respiratory Flashcards
(34 cards)
Average number of colds annually for adults and for children
adults 2-4
children 4-12
virus causing colds
rhinovirus
When are colds most contagious?
1-4 days before symptoms develop and during first 3 days of cold
antihistamine cold medicine mechanism of action
block H1 receptors, competing with histamine for binding sites.
What happens when Histamine-1 receptors are stimulated?
respiratory extravascular smooth muscle constriction, vasodilation
What happens when H2 receptors are stimulated?
gastric acid secretion
Diphenhydramine drug type
first generation OTC antihistamine
benadryl mechanism of action
competes with histamine for binding at H1 receptors
THIS DRUG is an OTC remedy for allergic rhinitis, cold, hives, and prevention of motion sickness
diphenhydramine hydrochloride
Should benadryl be used for an acute asthma attack or COPD?
NO
Should benadryl be used on neonates or hepatically impaired patients?
no
Narrow angle glaucoma, prostatic hypertrophy, urinary retention, pregnancy & breastfeeding are CAUTIONS for THIS DRUG
benadryl
hypotension, palpitations, and psychosis are adverse reactions for THIS DRUG
benadryl
The most common side effects of this drug are dry mouth & fatigue
benadryl
What should the nurse assess before benadryl administration?
respiratory status, urinary dysfunction, CBC
Can benadryl pass into breast milk?
yes
Second gen antihistamines are also known as the __-_____ antihistamines. What are two examples?
non-sedating.
loratadine, fexofenadine
Nasal decongestant drugs stimulate the _____ adrenergic receptors, producing vascular constriction in the nasal mucosa
adrenergic
OVERUSE of nasal decongestants can produce
rebound bronchial constriction and congestion
two examples of systemic decongestants (alpha-adrenergic antagonists) are…
pseudoephedrine and phenylephrine
What is the main disadvantage of systemic decongestants?
systemic effects are seen in multiple body systems wherever alpha-adrenergic responses are present
THESE DRUGS should be used with CAUTION in patients with hypertension, hyperthyroidism, and diabetes.
systemic decongestants
THIS DRUG TYPE has an anti-inflammatory action, decreasing the allergic symptoms of rhinorrhea, sneezing, and congestion
intranasal glucocorticoids
Should intranasal glucocorticoids be used for longer than 30 days?
no