Questions CH 70
1. 1.ID: 3772646893
A pregnant patient asks the nurse if she can take antihistamines for seasonal allergies during her
pregnancy. What
... [Show More] will the nurse tell the patient?
A. Antihistamines should be avoided unless absolutely necessary. Correct
B. Secondgeneration
antihistamines are safer than firstgeneration
antihistamines.
C. Antihistamines should not be taken during pregnancy but may be taken when
breastfeeding.
D. The margin of safety for antihistamines is clearly understood for pregnant
patients.
2. 2.ID: 3772646897
A family is preparing for travel and the parents report that their 5yearold
child has frequent motion
sickness. The nurse will tell the parents to ask the provider about which antihistamine to help
prevent symptoms?
A. Desloratadine [Clarinex]
B. Dimenhydrinate [Dramamine] Correct
C. Hydroxyzine [Vistaril]
D. Promethazine [Phenergan]
3. 3.ID: 3772646887
A nurse is teaching a group of nursing students about antihistamines. Which statement by a student
indicates an understanding of the mechanism of action of the antihistamines?
A. “Antihistamines block H1 receptors to prevent actions of histamine at these
sites.” Correct
B. “Antihistamines block release of histamine from mast cells and basophils.”
C. “H1 antagonists can bind to H1 receptors, H2 receptors, and muscarinic
receptors.”
D. “Firstgeneration
antihistamines are more selective than secondgeneration
antihistamines.”
4. 4.ID: 3772646891
A patient who has chronic allergies takes loratadine [Claritin] and develops a severe reaction to bee
stings. The patient asks the nurse why the antihistamine did not prevent the reaction. What will the
nurse say?
A. “Allergy symptoms that are severe are caused by mediators other than
histamine.” Correct
B. “H1 blockers do not prevent the release of histamine from mast cells and
basophils.”
C. “Secondgeneration
H1 blockers contain less active drug and do not work in
severe reactions.”
D. “Severe allergic reactions occur through actions on muscarinic receptors.”
5. 5.ID: 3772646895
A patient tells a nurse that antihistamines help relieve cold symptoms and wants to know why they
are not recommended or prescribed for this purpose. The nurse tells the patient that antihistamines
provide only mild relief from some cold symptoms by:
A. anticholinergic properties that decrease rhinorrhea.
B. blocking H1 receptors in nasal passages. Correct
C. reducing secretions at H2 receptor sites.
D. having sedative effects, which help patients rest and sleep. [Show Less]