Author Question: Which action(s) is/are true of antihistamines? (Select all that apply.) a. Reduce inflammation ... (Read 82 times)

fnuegbu · **on:** Jul 24, 2018

Which action(s) is/are true of antihistamines? (Select all that apply.)

a. Reduce inflammation locally
b. Antagonize H1 receptors
c. May be administered orally
d. Are systemically distributed
e. Reduce nasal congestion

Question 2

Which principle(s) will the nurse include in a teaching plan for antihistamine therapy? (Select all that apply.)

a. It is typical to experience an increase in energy.
b. Dietary fiber and fluids should be increased.
c. Do not take with prescription medications unless approved by a physician.
d. Blurred vision is an expected adverse effect.
e. Over-the-counter (OTC) medications are safe to use with any currently prescribed prescription medications.

Sweetkitty24130 · **Reply #1 on:** Jul 24, 2018

Answer to Question 1

ANS: A, B, C, D
Antihistamines reduce the symptoms of nasal itching, sneezing, rhinorrhea, lacrimation, and conjunctival itching through local and systemic actions. Antihistamines are H1 antagonists or blockers, may be administered orally, are distributed systemically, and do not reduce nasal congestion.

Answer to Question 2

ANS: B, C, D
All histamines cause anticholinergic adverse effects such as dry mouth, constipation, and urinary retention. Therefore, fluids and fiber should be increased in the diet when taking antihistamines. It is important to seek approval from the health care provider if currently using other scheduled medications with antihistamines. Blurred vision is an adverse effect of antihistamine use; patients should be urged to use caution because their cognitive and sensory abilities are impaired. Because of the sedative effect of most antihistamines, patients feel a decrease in energy. OTC medications must be approved by the health care provider to prevent drug interactions.