2.) Math

Question 1

Mercaptopurine has been ordered for a child who is 61 inches tall and weighs 20 kg. The recommended dosage is 70 mg/m²/day. What will be the safe dose for this child?

Answer 1

65 mg

Question 2

You are caring for a child who is 55 pounds and needs to be placed on an IV. What will your hourly rate be?

Answer 2

65 mL/hour

Step 1 = Convert pounds to kilos

55 pounds → 25 kg

Step 2 = Plug in numbers

• 4 mL/kg/hr for the 1^st 10 kg = 40 mL
• 2 mL/kg/hr for the 2^nd 10 kg = 20 mL
• 1 mL/kg/hr for the 3^rd 10 kg = 5 mL

Step 3 = Add them together

40 mL + 20 mL + 5 mL = 65 mL/hour

Question 3

Epinephrine 1:1000 is ordered for a stat administration. The recommended dose is 0.01 mg/kg. The child weighs 7 kg. How much will be safe to give?

Answer 3

0.07 mg

Question 4

What is the rule for rounding a number that is smaller than 1?

Answer 4

Question 5

A three-year old girl weighing 33 pounds is to receive Erythromycin 125 mg p.o. q 6 hours. The drug book says that she should be receiving 30-50 mg/kg/day in four divided doses. Is this a safe dose to give?

Answer 5

Question 6

Your patient has chloral hydrate solution ordered for sedation on call for a CT scan. The recommended dosage is 8 mg/kg. The child weighs 23 pounds. How much chloral hydrate will be safe to give?

Answer 6

84 mg

Question 7

Cisplatin 40 mg is ordered for a 25 pound, 100 cm child. The recommended dose is 50-70 mg/m². Is this dose safe to give?

Answer 7

Question 8

What is the rule for rounding a number after a decimal that is smaller than 0.5?

Answer 8

Question 9

Vancomycin, 500 mg diluted in 50 mL is to run over 1 hour, 30 minutes. What should the IV pump be set at to infuse the medication over the recommended time?

Answer 9

33 mL / hour

Question 10

How much fluid should an infant who weighs 5.5 pounds receive per hour (based on 4-2-1 method).

Answer 10

10 mL/hour

Question 11

Cefitaxime, 400 mg, is diluted in 8 mL of normal saline. The medication is to be infused over 30 minutes. What should the IV pump machine be set at to infuse over the 30 minutes?

Answer 11

16 mL / hour

Question 12

The doctor has ordered Methotrexate for a child who is 30 inches tall and weighs 25 pounds. The recommended dosage is 3.3 mg/m². What will be a safe dose for this child?

Answer 12

2 mg

Question 13

You are caring for a 2-month-old baby who weighs 9 pounds. Calculate the IV rate.

Answer 13

Question 14

A 2 kg premature infant with serious respiratory complications has orders for Nebcin IV. The doctor has ordered 3.5 mg/kg/day to be administered in two equal doses every 12 hours. What single dose will be safe to give?

Answer 14

3.5 mg

Question 15

You have a child weighing 45 pounds and who is 125 cm long. The doctor has ordered adriamycin 30 mg. The recommended dose is 35-75 mg/M². The medication comes up as 30 mg in 15 mL. You want to deliver this medication to run over 30 minutes.

Answer 15

30 mL/hour