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Physician's Order

The doctor orders Zithromax 500 mg orally, daily for a child who weighs 82 pounds. The safe dose range for this medication is 10-12 mg/kg/day. Zithromax is available in 250mg/tablets.

Is the order safe?

A.

False

B.

True

Answer and Explanation

The Correct Answer is A

  1. Convert weight to kilograms:
    82 lb ÷ 2.2 = 37.27 kg
  2. Calculate safe dose range:

Minimum dose: 10 mg × 37.27 kg = 372.7 mg/day

Maximum dose: 12 mg × 37.27 kg = 447.24 mg/day

  1. Compare with ordered dose:
    Ordered dose = 500 mg/day
    Safe range = 372.7 mg to 447.24 mg/day

→ 500 mg exceeds the maximum safe dose (447.24 mg)

Final Answer: No, the order is not safe.


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Related Questions

Correct Answer is D

Explanation

A. Ambulation is usually delayed until after initial assessment and pain/swelling control.
B. Wrapping the knee may be appropriate but ice application takes priority to reduce swelling and pain.
C. Passive ROM exercises are generally started later, not immediately post-procedure.
D. Applying ice packs helps control inflammation and swelling immediately after arthroscopy.

Correct Answer is ["447.2"]

Explanation

  1. Order:Zithromax 500 mg orally, daily
    Child’s Weight:82 pounds
    Safe Dose Range:10–12 mg/kg/day
    Available Form:250 mg tablets
    Question:What is the daily safe dose range for this child?

  2. Convert weight to kilograms:
    82 lb ÷ 2.2 = 37.3 kg(rounded to 1 decimal place)
  3. Calculate safe dose range:

Minimum:372.7 mg/day

Maximum:447.2 mg/day

Final Answer:Safe dose range: 372.7 mg to 447.2 mg per day

Minimum dose:10 mg × 37.3 kg = 373.0 mg/day

Maximum dose:12 mg × 37.3 kg = 447.6 mg/day

Round to tenths as instructed:

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