Module7Pharm Flashcards
(127 cards)
Activation of H1 receptors causes which of the following (choose all that apply):
a) vasodilation
b) vasoconstriction
c) mucous secretion
d) hypertension
e) itching
Answer: a, c,e
Activation of H1 can cause vasodilation of skin/face/upper body; CNS: itching, pain; and secretion of mucous.
Note: if extensive activation, hypotension can occur
True or false, with high levels of H1 involvement, hypotension can occur?
True.
Which is a therapeutic use for antihistamines (choose all that apply):
a) urticaria (transfusion reaction)
b) motion sickness
c) mild allergies
d) insomnia
Answer: all of the above are appropriate uses for anthistamines
Other uses include allergic conjunctivitis
What are side effects of first generation antihistamines?
a) hallucination
b) sedation
c) anticholinergic
d) muscarinic
e) seizures
Answer: a,b,c,e
Side effects include: sedation, dizziness, incoordination, confusion, hallucination, anticholinergic (can’t see can’t pee can’t shit can’t spit);
CNS stimulation at high doses and children are sensitive and can have seizures
Why are second generation antihistamines nonsedating?
a) they work through peripheral receptors
b) they cross the BBB easily
c) they have low affinity for H1 receptors of the CNS
d) None of the above
Answer: c) they have low affinity for H1 receptors in the CNS
They also cross the BBB poorly and can be mildly sedating.
Which drug would be the most effective option to treat allergic rhinitis?
a) Cromolyn
b) azelastine
c) Flonase
d) Ipratropium bromide
Answer: c) flonase
Intranasal glucocorticoids are the most effective option.
What is the MOA of intranasal glucocorticoids such as Flonase?
a) activate alpha-1
b) blocking cholinergic receptors
c) suppress histamine
d) decrease inflammation
Answer: d) decrease inflammation
Intranasal glucocorticoids are anti-inflammatory so they decrease congestion/rhinorrhea/sneezing/nasal itch/erythema
Side effects of Flonase include:
a) epistaxis
b) adrenal suppression
c) osteoporosis
d) slowed growth in children
e) somnolence
Answer: a,b,c,d
Side effects include: drying of nasal mucosa, itching/burning, sore throat, epistaxis, headache
Rare SE: adrenal suppression and slowing linear growth in children, osteoporosis
The NP should consider decreasing the dosage of Fexofenadine (Allegra) for a patient with what comorbidities?
a) liver disease
b) renal disease
c) heart disease
d) diabetes
Answer: b) renal disease
The drug can accumulate to high levels in renally impaired patients, and the doses should be decreased accordingly.
What should the patient avoid while taking Fexofenadine (Allegra)?
a) dairy
b) fruit juices
c) chelating agents
d) CNS depressants
Answer: b) fruit juices
Fruit juices can interfere with absorption.
True or false, intranasal antihistamines will decrease symptoms when taken as needed.
False. These drugs need to be used prophylactically.
What are side effects of intranasal antihistamines: azelastine (Astelin) and olopatadine (Patanase)?
a) epistaxis
b) adrenal suppression
c) slowed growth in children
d) somnolence
Answer: a & d
Side effects include: somnolence, nosebleed, headache, unpleasant taste
Ipratropium bromide (Atrovent) will help to relieve allergic rhinitis symptoms including:
a) sneezing
b) nasal congestion
c) postnasal drip
d) mucous secretions
Answer: d) mucous secretions
Because it is an anticholinergic agent it only acts to “dry up=can’t see can’t pee can’t shit can’t spit”.
It blocks muscarinic receptors.
It does NOT provide any relief of the other symptoms.
Cromolyn is ______ (highly/moderately) effective at managing allergic rhinitis and works by _______ (suppressing histamine/blocking cholinergic actions).
Answer: Cromolyn is an intranasal spray which is MODERATELY effective and works by suppressing histamine/inflammatory response. It takes up to 2 weeks to develop relief. It can be useful in asthma also.
Sympathomimetics are effective in treating allergic rhinitis due to what action?
a) drying secretions
b) decreasing inflammation
c) activating alpha-1
d) decrease histamine
Answer: c) activating alpha-1
By activating alpha-1 these drugs (phenylephrine, ephedrine, pseudoephedrine) cause vasoconstriction of nasal vessels
Benefits of pseudoephedrine in allergic rhinitis include:
a) decreased nasal congestion
b) reduced rhinorrhea
c) decreased itch
d) decreased stretch
Answer: a) decreased nasal congestion
These drugs stimulate alpha-1 which causes vasoconstriction to decrease congestion and facilitate drainage. They do not decrease other symptoms.
Side effects of pseudoephedrine/ephedrine/phenylephrine include:
a) sedation
b) vasodilation
c) abuse potential
d) rebound congestion
Answer: c &d
SE: CNS stimulation, vasoconstriction, abuse potential (pseudoephedrine) and rebound congestion with topical use exceeding 3-5 days
Topical sympathomimetics provide ______ (intense/moderate) relief which is _______ (rapid/delayed).
Topical sympathomimetics provide intense relief which is rapid. Topical effects are shorter and more likely to have rebound congestion when used beyond 3-5 days.
True or false, oral sympathomimetics are commonly associated with rebound congestion.
False.
What is the MOA of montelukast?
a) activate alpha-1
b) blocking cholinergic receptors
c) blocking binding of leukotrienes
d) decrease inflammation
Answer: c) block binding of leukotrienes
This blocking action will prevent vasodilation and thus relieve nasal congestion
Side effects of montelukast include:
a) anticholinergic effects
b) psych effects
c) epistaxis
d) headache
Answer: b) psychiatric effects
Including: agitation, aggression, depression, suidical thoughts
What is the MOA of the cough supressant dextromethorphan?
a) decreases respiratory stretch receptors to suppress cough
b) decreases sensitivity in local tissue to cough urge
c) works directly on the cough center of CNS
d) works in CNS but not as an opioid
Answer: c)works directly on cough center of CNS
True or false, dextromethorphan, codeine, and hydrocodone cough syrups all have abuse potential.
True.
The greatest abuse potential is with hydrocodone as it is more potent.
True or false, diphenhydramine (Benadryl) can be used for cough relief.
True, the MOA is unknown.