Table 1

Questionnaire used to test paediatric residents’ drug dose calculation skills

This is an anonymous questionnaire
Please make the following dose calculations. Use a calculator or any other means you use routinely
If you have any comments about any of the doses, please write in the “comment” space
1A 3 day old baby is treated with 15 mg of phenytoin intravenously. The ampoule contains 50 mg/ml. The baby should receive _____ml.
Comment:_______________________________________________________________________________________________________
298 mEq of potassium chloride has to be added to intravenous fluids. The ampoule contains 20 ml with a potassium concentration of 3.2 mEq/ml. You should inject ____ml of the solution.
Comment:_______________________________________________________________________________________________________
3A child with hyperglycaemia has to receive 8 U of insulin. The solution contains 40 U/ml. The child should receive _____ml.
Comment:_______________________________________________________________________________________________________
4A preterm infant is to receive 0.3 g of calcium gluconate intravenously. The solution contains 10% calcium gluconate (10 g/100 ml of the solution). The infant should receive _____ml.
Comment:_______________________________________________________________________________________________________
5A toddler is treated with 32 mg of gentamicin intravenously. The solution contains 40 mg/ml of gentamicin. The baby should receive _____ml.
Comment:_______________________________________________________________________________________________________
6A baby is treated with theophylline intravenously. The order was for 35 mg. The ampoule contains 250 mg/5 ml (50 mg/ml). The child should receive _____ml.
Comment:_______________________________________________________________________________________________________
7A 12 month old child is to receive 0.625 mg of intravenous digoxin during digitalisation. Each millilitre of Lanoxin contains 0.250 mg. How many millilitres of Lanoxin should be received? _____ml.
Comment:_______________________________________________________________________________________________________
8A 2 kg child received 1.6 ml of Lanoxin (0.250 mg/ml). How many milligrams did the child receive? _____mg.
Comment:_______________________________________________________________________________________________________
9A 2 month old infant was prescribed 0.3 ml of phenobarbital for seizures. The concentration of the solution is 30 mg/ml. She received 3 ml instead. How many milligrams were given? _____mg.
Comment:_______________________________________________________________________________________________________
10A child weighs 74 lbs. How many kilograms does he weigh? ____kg
Comment:_______________________________________________________________________________________________________
I am a:paediatric postgraduate year 1
paediatric resident
surgical resident
family practice resident
other (specify):
Years in training ____