NR452 Medication Calculation Practice: Preparation for Math Exam NR452 Practice Medication Calculation 

Important Instructions:

• Complete both the practice quiz on Canvas and this math packet before attempting the math exam.
• If you experience difficulty completing the math practice packet, seek assistance from the Student Learning Center (SLC) or your designated course instructor.
• Completion of the NR452 math packet is mandatory; it serves as your “ticket” to take the math exam on the first day of class. You will not be permitted to take the math exam if your work is incomplete.

Guidelines for Calculation:

• Use the dimensional analysis method to show your work.
• Round your answers to the specified decimal place(s).
• Use a leading zero for amounts less than 1 (e.g., 0.6 mL).
• Avoid trailing zeros (e.g., 6 mg instead of 6.0 mg).
• Round drops (gtt) to the nearest whole number.

Per Chamberlain policy, you have three attempts to achieve the required 100% benchmark to pass the NR452 course. If you are unsuccessful on the first attempt, you must remediate with your didactic instructor by Thursday of Week 1. If unsuccessful on the second attempt, you must remediate with the SLS team by Tuesday of Week 2. After remediation, you must wait 24 hours before retaking the math exam. Schedule your retake with your didactic instructor once you have met all remediation requirements.

Please submit this medication calculation packet on Canvas by Sunday, March 5th, by 11:59 PM to qualify for the first medication calculation exam on the first day of class. Failure to submit by this deadline will result in a voided math exam and a zero in the gradebook. Additionally, students must complete the Math Calc Practice Exam with a score of 100% to proceed.

Example Calculations:

Question 1: Order: Morphine 5 mg IM Available: Morphine 10 mg/mL Calculation: How many mL will the nurse administer?

Calculation Process:

5 mg10 mg/mL=0.5 mL\frac{5 \, \text{mg}}{10 \, \text{mg/mL}} = 0.5 \, \text{mL}10mg/mL5mg​=0.5mL

Answer: 0.5 mL

Question 2: Order: Norepinephrine (Levophed) 0.2 mcg/kg/min IV Available: Norepinephrine 4 mg in 1 L of D5W Client Weight: 41 lb Calculation: At what rate will the nurse set the infusion? (Round to the nearest whole number.)

Calculation Process:

1. 41 lb2.2 lb/kg=18.64 kg\frac{41 \, \text{lb}}{2.2 \, \text{lb/kg}} = 18.64 \, \text{kg}2.2lb/kg41lb​=18.64kg
2. 0.2 mcg/kg/min×18.64 kg=3.728 mcg/min0.2 \, \text{mcg/kg/min} \times 18.64 \, \text{kg} = 3.728 \, \text{mcg/min}0.2mcg/kg/min×18.64kg=3.728mcg/min
3. 3.728 mcg1000=0.003728 mg/min\frac{3.728 \, \text{mcg}}{1000} = 0.003728 \, \text{mg/min}10003.728mcg​=0.003728mg/min
4. 0.003728 mg/min×1000 mL4 mg=0.932 mL/min\frac{0.003728 \, \text{mg/min} \times 1000 \, \text{mL}}{4 \, \text{mg}} = 0.932 \, \text{mL/min}4mg0.003728mg/min×1000mL​=0.932mL/min0.932 mL/min×60 min/hr=55.92 mL/hr0.932 \, \text{mL/min} \times 60 \, \text{min/hr} = 55.92 \, \text{mL/hr}0.932mL/min×60min/hr=55.92mL/hr

Answer: 56 mL/hr (rounded to the nearest whole number)

Question 3: Order: Propranolol (Inderal) 120 mg PO Available: Propranolol 30 mg tablets (scored tablet) Calculation: How many tablets will the nurse administer?

Calculation Process:

120 mg30 mg/tablet=4 tablets\frac{120 \, \text{mg}}{30 \, \text{mg/tablet}} = 4 \, \text{tablets}30mg/tablet120mg​=4tablets

Answer: 4 tablets

Question 4: Order: Risperidone (Risperdal Consta) 25 mg IM Available: Risperidone 25 mg/mL Calculation: How many milliliters will the nurse administer?

Calculation Process:

25 mg25 mg/mL=1 mL\frac{25 \, \text{mg}}{25 \, \text{mg/mL}} = 1 \, \text{mL}25mg/mL25mg​=1mL

Answer: 1 mL

Question 5: Order: Morphine 6 mg IM Available: Morphine 2 mg/mL Calculation: How many mL will the nurse administer?

Calculation Process:

6 mg2 mg/mL=3 mL\frac{6 \, \text{mg}}{2 \, \text{mg/mL}} = 3 \, \text{mL}2mg/mL6mg​=3mL

Answer: 3 mL

Question 6: Order: Procainamide to infuse at 2 mg/min IV Available: Procainamide 3 g/250 mL of D5W Calculation: At what rate will the nurse set the infusion? (Round to the nearest whole number.)

Calculation Process:

1. 3 g=3000 mg3 \, \text{g} = 3000 \, \text{mg}3g=3000mg
2. 2 mg/min×250 mL3000 mg=0.1667 mL/min\frac{2 \, \text{mg/min} \times 250 \, \text{mL}}{3000 \, \text{mg}} = 0.1667 \, \text{mL/min}3000mg2mg/min×250mL​=0.1667mL/mi