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Author Question: A patient who frequently takes diphenhydramine (Benadryl) to prevent motion sickness is scheduled ... (Read 46 times)

vicotolentino

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on: Jul 23, 2018
A patient who frequently takes diphenhydramine (Benadryl) to prevent motion sickness is scheduled for skin testing to diagnose possible allergies. For what number of days should the pa-tient refrain from taking diphenhydramine before skin testing?
 
  a. 1
  b. 2
  c. 4
  d. 7

Question 2

A patient is receiving hydroxyzine (Vistaril) for complaints of nausea and vomiting. Consider the following adverse effects of the drug, and select the one that is most significant.
 
  a. Excessive salivation
  b. Increased pulse
  c. Decreased respiratory rate
  d. Sedation


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Joc

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Reply #1 on: Jul 23, 2018
Answer to Question 1

ANS: C
Allergy skin testing may be falsely negative in patients taking dimenhydrinate, diphenhydramine, and meclizine at the time of testing. Discontinue diphenhydramine 4 days before testing.

Answer to Question 2

ANS: D
Hydroxyzine is an antihistamine that is also an anticholinergic because it blocks the action of ac-etylcholine in the brain. As such, it causes sedation as the most significant adverse effect.


vicotolentino

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Reply #2 on: Jul 23, 2018
Thanks


Joc

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Reply #3 on: Jul 23, 2018
Welcome :)


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