Pediatric Medication Math Exam
NURS. 3520
Instructions: Please show your math for each problem. For each answer, be sure to include the unit of
measure. Observe the rules regarding leading and trailing zeros. Please round to the nearest hundredth.
Part I: Conversions (each question is worth 0.5 point)
1. 9 pounds 8 oz = _______________Kg.
2. 240 mcg = ___________________mg.
3. 0.075 mg = __________________mcg.
4. 2,275 mg = __________________gms.
5. 3 ounces = __________________ml (round to the nearest whole number)
6. 35 Kg = _____________________lbs
7. 215 lbs = ____________________Kg.
8. 15 lbs 5 oz =__________________Kg.
9. 2 tsp = _____________________ml
10. 0.75 gms = __________________mg.
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Part II: Safe Administration Calculations (Each question is worth 1 point)
1. A 0.9% Normal Saline bolus is ordered for a dehydrated child. The child weighs 66 pounds.
The order states to administer 20 mL/kg to be given over 30 minutes. How much fluid (in
mL) will you administer?
2. The order states to give Furosemide oral solution 3 mg by mouth TID (three times a day) to
an infant with heart failure. You have already calculated that the dose is safe. The Furosemide
solution is supplied in 10 mg/ml. How many mL will you administer to this child per dose?
3. Acetaminophen 120 mg elixir every 4 hours prn is ordered for a child with a fever. The child
weighs 25 pounds. The medication book states that the safe dosage of acetaminophen for
children is 10-15 mg/kg/dose every 4-6 hours, not to exceed 5 doses in 24 hours.
a. What is the safe dosage range for this child?
b. Is the ordered dose safe?
c. The acetaminophen is labeled 160 mg/ 5mL. How many mL will you give the child
per dose?
4. Your pediatric patient is to receive Penicillin G sodium 2 million units IV every 4 hours. The
medication is to be reconstituted with 10 mL of sterile water. This will yield 5 million units
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per 10 mL. How many mL of the medication will you draw up to administer this child’s dose
of 2 million units?
5. Your 16-year-old patient has a D5 0.45% NS 1000 ml bag ordered to infuse at 100 ml/hour.
The bag has been started at 9 AM. At what time will the bag be empty?
6. The doctor has just ordered your 2-year-old pediatric patient to have Zithromax 150 mg once
a day for five days. You are teaching the family how much to administer to the child with
each daily dose. You have already figured out that the dose is safe for this child. The
medication is supplied as 200 mg/5 ml.
a. How much will you teach the family to administer with each dose?
b. When the family fills the prescription, they receive a bottle containing 50 mL of
Zithromax elixir yielding 200 mg/5 mL. How many full doses of medication do they
have?
Part III (Each question is worth 1 points)
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For the following questions, please use Davis’s Drug Guide to locate the safe dosage and
administration information. I am having you do this for the test to assess your understanding and
interpretation of the information presented in the various pharmacology resources. To access this
resource through the library, go the North Park homepage. Select “Brandel Library.” From the
menu on the left, select “Databases and Online Resources.” Then scroll down the resources until
you reach “Nursing Reference Center.” Select this item. From the menu at the top, select
Practice Resources. The drug guide will be among several resources available to you online. At
some point during this process, you will be asked to enter your ID and password to access the
information.
(Be sure to show all your calculations. Answers without calculations will be marked wrong and
you will have to redo the exam.)
1.
Katie is a 6-month-old infant who was admitted to the hospital in status epilepticus. She
weighs 7 kg. To control the seizures, she has been given 2 doses of Valium (diazepam) 2
mg IV push. She received these doses at 8AM and 10AM. It is now 1 PM. The physician
has ordered an additional 1 mg dose.
a. Is it safe to give this dose?
b. The physician has now ordered a loading does of phenobarbital for Katie. He has ordered
Phenobarbital 130 mg IV push. Is this dose safe?
c. How long should it take to administer this IV push dose? (please give answer in total
amount of minutes)
2.
Charlie is a 4-year-old admitted 48 hours ago with meningitis. The lab just reported that
his culture grew S. Pneumoniae and he is septic at this time. He weighs 18 kg. The physician has
ordered Vancomycin 270 mg IV piggyback every 6 hours.
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a. What is the maximum safe daily dose of Vancomycin for this child?
b. Over what time should this medication be given? (Answer in Minutes)
3.
An 18-month-old infant was admitted with a diagnosis of congestive heart failure. She
weighs 12 kg. On admission, she was given 12 mg of Lasix (furosemide) IV push. The physician
has decided to start her on digoxin. He has ordered the following digitalizing dose: Digoxin 240
mcg IV now and 120 mcg IV every 8 hours for 2 doses. The digoxin is available as 0.25 mg/ml
for IV administration.
a. Is this order safe?
b. How many ml of digoxin will you administer to give the 240 mcg dose?
c. The physician has also ordered Lasix 15 mg IV push every 8 hours.
d. Is this a safe dose for this infant?
4. Amanda is an 11-month-old infant weighing 19.8 pounds. She was admitted with an upper
respiratory tract infection. The physician has ordered: Amoxil 80 mg, PO every 8 hours.
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a. What is the minimum and maximum therapeutic dose? (answer in mg/dose)
b. What amount of medication is to be given to administer 80 mg? (answer in mL)
5.
Tommy is a 6-month-old who is being treated for a urinary tract infection. He weighs 7.5 kg. The
physician has ordered Cefazolin 275 mg, IV push every 8 hours. It is supplied as a 500mg vial to be
reconstituted with 9 mL to give a concentration of 50 mgs/ml.
a. Is this a safe dose?
b. How mls will you draw from the vial to give the 275 mgs?
c. How many minutes should you take to administer the medication?
6.You are caring for a 12-year-old admitted for pneumonia. He weighs 88 pounds. The physician has
ordered Cefuroxime 500 mg IV piggyback every 6 hours. It is supplied in piggyback form as 500 mg in 50
ml.
c. What is the safe daily therapeutic dosage range for this child?
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d. At what rate will you set the IV pump to administer this medication over 15 minutes?
(answer in ml/hr)
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