ATI PN Management 2020
ATI PN Management 2020 ( 86 Questions)
A nurse is preparing to administer tobramycin 3 mg/kg/day IM in three divided doses to a client who weighs 85 kg. Available is tobramycin 40 mg/mL. How many mL should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
To calculate the total daily dose of tobramycin, we use the formula:
Total Daily Dose (mg) = Dose (mg/kg/day) × Weight (kg)
Total Daily Dose (mg)=Dose (mg/kg/day)×Weight (kg)
In this case:
Total Daily Dose=3 mg/kg/day × 85 kg
Total Daily Dose=255mg/day
Since the total daily dose is divided into three doses, the nurse should administer:
Dose per Administration =Total Daily Dose/Number of Doses per Day
Dose per Administration = 255 mg/3
Dose per Administration≈85mg
Now, to calculate the volume (mL) to administer, we use the concentration of the available tobramycin solution:
Volume (mL)=Dose per Administration (mg)/Concentration (mg/mL)
In this case:
Volume=85mg/40mg/mL
Volume≈2.1mL
Therefore, the nurse should administer approximately 2.1 mL of tobramycin per dose, rounded to the nearest tenth.