Chapter 21 Dosage for Special Populations TECH Q&A (1 OF 12) Sample Questions

1. A 9-year-old child was given Cephalexin 250 mg/5 mL to use it as 10 mL. 4 times daily. His doctor wants to switch him to Cephalexin 500 mg 4 × daily for 1 week. The number of capsules should be:
  1. A. 28 cap of Cephalexin 500 mg
  2. B. 56 cap of Cephalexin 250 mg
  3. C. Both A and B
  4. D. None of the above
Ans: C
Solution:
250 × 2 = 500 mg each dose
500 mg × 4 = 2000 mg per day ,the child is using from suspension.
The switching to cap will require 500 × 4 = 2000 mg Cephalexin cap thus 4 cap of 500 mg Cephalexin and since it is for 7 days,
then 4 × 7 = 28 cap.