Question

1 ) Solumedrol 1.5 mg/kg is ordered for a child weighing 74.8 lb.

Solumedrol is available as 125 mg / 2mL. How many mL must the nurse administer?

2)

The physician orders Tobramycin 75mg IV every 12 hours for a child weighing 74 lbs. The drug literature recommends a maximum dose of 5mg/Kg/day. You check the appropriateness of the physician’s order.

Determine that a safe maximum dose per day of Tobramycin would be?

Is it safe to give? (Yes or no)

Answer 1

1. ordered Solumedrol is 1.5mg/kg

child weight is 74.8lb=33.92 kg

then required dose as per weight will be=1.5X33.92=50.88mg

Available is Solumedrol is = 125 mg / 2mL.

means in 1 ml 62.5 mg

thus required ml to fulfill the required dose i.e. 50.88mg?

62.5 mg in 1 ml

1mg will be in=1/62.5

50.88mg will be in =(1/62.5)X50.88

=0.8 ml of available is Solumedrol i.e. 125 mg / 2mL will fulfill the dose requirement of the child.

Q.2. Ordered Tobramycin 75mg IV every 12 hours for a child weighing 74 lbs

Weight in kg=33.63 kg

The drug literature recommends a maximum dose of 5mg/Kg/day.

then for 33.63 kg it will be 168.15 mg per day or for 24 hours

hence for 12 hours it will be=84.075 mg is the safe dose as per literature

and 75mg IV every 12 hours , which is below the safe dose value, hence the ordered Ordered Tobramycin 75mg IV every 12 hours for a child weighing 74 lbs is safe.