NCLEX-RN Practice Exam Question
A child weighing 30 kg arrives at the clinic with diffuse itching as the result of an allergic reaction to an insect bite. Diphenhydramine (Benadryl) 25 mg 3 times a day is prescribed. The correct pediatric dose is 5 mg/kg/day. Which of the following best describes the prescribed drug dose?
A. It is the correct dose.
B. The dose is too low.
C. The dose is too high.
D. The dose should be increased or decreased, depending on the symptoms.
HINTS:
This child weighs 30 kg, and the pediatric dose of diphenhydramine is 5 mg/kg/day (5 X 30 = 150/day).
Therefore, the correct dose is 150 mg/day. Divided into 3 doses per day, the child should receive 50 mg 3 times a day rather than 25 mg 3 times a day.
Dosage should not be titrated based on symptoms without consulting a physician.
ANSWER: B. The dose is too low.
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