How many mL of tobramycin should be given if the patient is 60 kg and the ordered dose is 4 mg/kg/day with a concentration of 40 mg/mL?

To determine the correct volume of tobramycin to administer, we first need to calculate the total daily dose required based on the patient's weight and the ordered dose. The patient weighs 60 kg and requires a dose of 4 mg/kg/day.

Calculating the total dose:

• Total dose = weight (kg) × dose (mg/kg)

• Total dose = 60 kg × 4 mg/kg = 240 mg

Next, we need to convert this total dose into the volume (mL) required using the concentration of the medication provided, which is 40 mg/mL.

To find out how many mL this corresponds to, we use the formula:

• Volume (mL) = Total dose (mg) ÷ Concentration (mg/mL)

• Volume = 240 mg ÷ 40 mg/mL = 6 mL

However, since the question asks for mL based on a specific daily dose, we should split the total daily dose into the required volume for a single administration. If this dose was to be given as a single daily dose, it still confirms how much the individual would receive effectively.

If we were considering a timing split for doses (which is sometimes the case for medications