Extra Math Practice Questions for CNUR 202 Final Exam
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Apr 3, 2024
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Practice Questions for the CNUR 202 Final Exam Ensure you follow the ‘Medication Math Rules’ from Lab 1. **Please note: not following these rules when doing math calculations on the final exam will result in marks being deducted.** 1.
The physician ordered acetaminophen 10 mg/kg/dose q 12h prn for an 8 year old child. She weighs 23 kg. How many mL should she receive with each dose? Acetaminophen elixir is available 160 mg/5 mL.
2.
Sarah weighs 19 kg. She is receiving gentamicin. The recommended pediatric dose is 9 to 11 mg/kg/day in divided doses. What is a therapeutic daily range for Sarah? 3.
The order reads: give carbenicillin sodium 135 mg/kg/day IM in equally divided doses TID. The child receiving the medication weighs 29 lb. The carbenicillin sodium is available in a solution of 1 g per 5 mL. What volume would you give for one dose
?
4.
Amoxicillin (Amoxil) 350 mg PO q6h is ordered for a child weighing 38 lb. Amoxicillin is available 125 mg/5 mL. The therapeutic dose is 25 - 45 mg/kg/day in divided doses q6h. Is this a therapeutic dose?
5.
The physician prescribed gentamicin 13.5 mg IV q8h for an infant who weighs 6 kg. The maximum safe dosage amount is 2.5 mg/kg/dose. Gentamicin is available as 15 mg/mL. Is the prescribed dose a safe dose? How many mL would you administer per dose? 6.
The physician prescribed morphine sulphate 2 mg IV q4h, PRN for pain for a child that weighs 85
pounds. The safe dose range is 0.05 to 0.2 mg/kg/dose. Morphine sulphate is available as 12 mg/mL. What is the safe dosage range for this child? Is the medication order within a safe range? How many mL of medication should the child receive each dose as prescribed?
7.
The physician prescribed vancomycin 315 mg IV q6h, for a 55 pound child. The safe dosage is 35
mg/kg/day. What is a safe dose for this child? Is the prescribed dose over, equal or under what is considered safe?
8.
The physician prescribed Lasix 38 mg IV for a 78 pound child. The label reads: Lasix 10 mg/mL. The safe dosage range is 0.5 to 2 mg/kg/dose. What is the safe dosage range for this child? Is this within the safe range? How many mL of medication will you administer? 9.
In a 4 mL ampoule, there is Benadryl 25 mg/mL. How much will the nurse draw up to administer 40 mg?
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10.
The following information is found on a hydrocortisone medication label:
The physician has prescribed 35 mg of hydrocortisone IV TID. Is this a safe dose for the patient? The child weighs 32 lb.
11.
The nurse has added 30 mg of furosemide (Lasix) to a 75 mL minibag. The IV Reference Manual states the medication can be infused over 40 minutes. At what hourly rate
will the nurse set the IV pump
to?
12.
A nurse is administering ondansetron (Zofran) to a patient via an intermittent infusion. The IV reference manual states the medication can be infused over 20 minutes. The medication has been added to a 50 mL minibag. At what hourly rate
will the nurse set the IV pump
to?
13.
Health care provider order: ciprofloxacin 375 mg now. The medication is available as a powder in a vial. Directions for reconstitution: add 10 mL sterile water to yield a solution of 37.5 mg/mL.
How many mL will the nurse draw up to administer to the ordered dose? 14.
Medication order: penicillin G potassium 325, 000 units IV q6h. Available: penicillin G potassium 1, 000, 000 unit vial. After reconstituting the medication to the most appropriate strength
(see chart below for strength options), what volume of medication will the nurse withdraw to administer the ordered dose?
15.
Health care provider order: Tazicef 1,200 mg IV Q8h. Based on selecting the correct vial size
and
reconstituting it, what volume of medication will the nurse withdraw to administer the ordered dose?
16.
The nurse is preparing to mix a morphine IV infusion. The IV Reference Manual states to mix 100
mg in 100 mL of NS. Morphine is available in 20 mg ampoules. How many ampoules of morphine
will the nurse need to prepare this medication?
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17.
Refer to the following label. The medication order reads naproxen (Naprosyn) 500 mg PO BID. How many tablets will the patient receive for a 72 hour period
?
18.
A patient is being started on IV heparin at 1,100 units per hour. IV heparin is available in a concentration of 25,000 units per 500 mL. How many mL/hr will the nurse set the IV rate for?
19.
A patient is being started on IV heparin at 2,150 units per hour. IV heparin is available in a concentration of 25,000 units per 500 mL. How many mL/hr will the nurse set the IV rate for?
20.
The patient is receiving an IV at 75 mL/hr. The drop factor of the IV is 15 gtt/mL. At how many drops/minute would you run the IV?
Answers: 1.
7.2 mL
2.
171-209 mg/day
3.
3 mL
4.
No, this is a not therapeutic dose for the patient
Safe range: 432.5-778.5 mg/day for the patient
Patient receives: 1,400 mg/day
5.
Yes, dose is within safe range (max safe dose is 15 mg/dose, ordered dose is 13.5 mg). Volume to administer per dose: 0.9 mL.
6.
Safe dose range: 1.93 mg – 7.72 mg per dose is the safe range. Yes, order is within safe range, 0.17 mL of medication should be administered.
7.
Safe dosage = 875 mg/day. Prescribed dose per day = 1,260 mg; this is over what is considered safe.
8.
Weight: 78 lb = 35.5 kg. Safe dose range = 17.75-71 mg/dose. Yes, ordered dose (38 mg) is within safe range. Would administer 3.8 mL of medication. 9.
1.6 mL
10.
32 lb = 14.5 kg
Safe dose for patient: 8.12 mg-116 mg/day
Prescribed dose: 105 mg/day
Therefore, yes, this is a safe dose for the child.
11.
113 mL/hr
12.
150 mL/hr
13.
10 mL
14.
1.3 mL (most appropriate strength: 250, 000 units/mL)
15.
6.7 mL (correct vial size to choose: 2 g vial)
16.
5 ampoules
17.
12 tablets for 72 hours
18.
22 mL/hr
19.
43 mL/hr 20.
19 gtt/min