Ordered: Tobramycin sulfate 60mg tid IV for a 40-lb child. Safe doses range: 6 to 7.5 mg/kg/day in 3 divided doses.
Is the order safe?
ANSWER.
* Calculation of safe dose for this child.
Ordered dose = 60 mg tid.
tid is three times a day
so
Ordered dose = 60 * 3
= 180 mg per day.
Weight of the patient = 40 lb.
Convert lb to kg for calculation
1 lb = 0.454 kg
SO
Weight of the child = 40 * 0.454
= 18.2 kg.
Safe recommended dose range = 6 to 7.5 mg/kg/day.
Safe dose for this child = 6 * 18.2 to 7.5 * 18.2
= 109.2 mg to 136.5 mg per day.
* So the ordered dose (180 mg/day) is not safe for this child.
Ordered: Tobramycin sulfate 60mg tid IV for a 40-lb child. Safe doses range: 6 to 7.5...
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