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Antihistamines
N/A
27
Pharmacology
Professional
04/04/2011

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Cards

Term
H1 blocker indications
Definition
-adjunct in treatment of anaphylactic shock
-urticaria and pruritis
-rhinitis
Term
H2 blocker indications
Definition
peptic ulcer disease
GERD
(reduction of acid secretion in stomach)
Term
Which generation of H1 blockers do not cross the BBB to any extent?
Definition
2nd
Term
1st generations are _____ drugs.
Definition
"dirty"
Term
1st generations also block...
Definition
-muscarinic receptors
-alpha receptors
-5-HT receptors
-Na channels
Term
1st generation indications
Definition
-acute and chronic allergic rhinitis
-vasomotor rhinitis
-eosinophilic nonallergic rhinitis
-viral URI
-urticaria
-allergic conjunctivitis
-anaphylactic reactions (add to epi)
-motion sickness/nausea (H1 and m)
-insomnia (H1 and m)
Term
rhinitis symptoms treated by 1st generations
Definition
sneezing (H1)
itching (H1)
rhinorrhea (m)

sinus congestion is NOT treated
Term
diphenhydramine
Definition
1st gen
Term
chlorpheneramine
Definition
1st gen
Term
promethazine
Definition
1st gen
Term
1st generation side effects
Definition
sedation
CNS effects
dry mouth
blurred vision
urinary retention
Term
cetirizine
Definition
2nd gen
Term
loratidine
Definition
2nd gen
Term
key points about 2nd generations
Definition
-less complete distribution to CNS so less sedation compared to 1st generations
-longer half life therefore longer duration of action
Term
rhinitis symptoms treated by 2nd generations
Definition
sneezing (H1)
itching (H1)

sinus congestion is NOT treated
rhinorrhea is NOT treated
Term
pseudoephedrine
Definition
alpha agonist
oral decongestant
Term
phenylephrine
Definition
alpha agonist
oral decongestant
Term
alpha agonists mechanism of action
Definition
cause vasoconstriction, reduce edema
Term
oral decongestant effects
Definition
-reduce sinus congestion
-reduce fluid in Eustacian tubes
-DO NOT reduce sneezing, itching, rhinorrhea
-raise BP
-myadriatic
Term
Oral decongestants are commonly combined with...
Definition
antihistamine
Term
Oral decongestants may cause...
Definition
insomnia (stimulating)
Term
Other therapy for rhinitis that inhibits degranulation of mast cells
Definition
intranasal cromolyn sodium (nedocromil)
Term
ranitidine
Definition
H2 blocker
Term
guaifenesin
Definition
claimed to facilitate removal of viscous mucus (expectorant)
Term
potassium iodide
Definition
claimed to decrease viscosity of mucus (expectorant)
Term
benzonatate
Definition
non-opioid, local anesthetic (lung) used as an antitussive
Term
dextromethorphan
Definition
OTC opioid used as antitussive
central suppression of cough reflex
lacks addictive properties
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