A nurse is teaching a client about taking diphenhydramine. The nurse should explain to the client that which of the following is an adverse effect of this medication?
Headache
Constipation
Bradycardia
Hypertension
The Correct Answer is B
The correct answer is choice b. Constipation.
Choice A rationale:
While headaches can occur with some medications, they are not a common adverse effect of diphenhydramine. Diphenhydramine's typical side effects are more related to its anticholinergic properties.
Choice B rationale:
Diphenhydramine is an antihistamine with anticholinergic effects, which can lead to dry mouth, urinary retention, and constipation as common adverse effects.
Choice C rationale:
Diphenhydramine typically does not cause bradycardia. In some cases, it may cause tachycardia (increased heart rate) rather than a slower heart rate.
Choice D rationale:
Hypertension is not typically associated with diphenhydramine. In fact, it can sometimes cause hypotension (low blood pressure) rather than high blood pressure.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
According to Mayo Clinic, before applying gentamicin topical cream, one should wash the affected area with soap and water and dry thoroughly. Then apply a small amount to the affected area and rub in gently.

Correct Answer is D
Explanation
Metronidazole is an antibiotic that is effective against anaerobic bacteria and protozoa. It is not effective against Gram-negative bacteria such as Pseudomonas aeruginosa or Klebsiella, nor is it effective against fungi such as Candida. However, it is the drug of choice for the treatment of Trichomoniasis vaginalis, a common sexually transmited infection caused by a protozoan parasite. Therefore, the nurse should include in the teaching that metronidazole is indicated for the treatment of Trichomoniasis vaginalis.
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