Weight basis
Convert pounds to kilograms before comparing any mg/kg range.
Nursing safe-dose practice
Pediatric safe dose range practice for nursing students
Practice the step that comes after calculating a dose: deciding whether the ordered amount fits the child’s safe mg/kg range, dose maximum, daily maximum, frequency, and concentration setup.
Ordered amount
Identify whether the order is written per dose, per day, or divided over a schedule.
Safe range
Calculate the low and high ends of the safe range using kg × mg/kg.
Maximums
Check single-dose and total daily maximums before accepting the result.
Concentration
Convert mg to mL only after the dose is judged safe and the concentration is verified.
Policy check
Use instructor, facility, formulary, and device-rounding rules for final decisions.
Worked safe-range example
A 22 kg child has a practice order for 180 mg every 6 hours. The reference range for the exercise is 30–50 mg/kg/day divided every 6 hours, with a maximum of 2,000 mg/day.
- Daily safe range: 22 kg × 30–50 mg/kg/day = 660–1,100 mg/day.
- Every 6 hours means 4 doses/day, so per-dose range = 165–275 mg per dose.
- Practice order: 180 mg per dose and 720 mg/day total.
- Result: within the exercise range and below the daily maximum.
In clinical practice, the drug-specific monograph, concentration, route, indication, renal/hepatic considerations, and local policy still control the final decision.