231math practice KEY PDF

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Nurs231 Med Math Practice Directions: Round answer as follows:  Round syringe volume to nearest 1/10 mL (x.x)  Round infusion pump rate to nearest 1/10 mL/hr (x.x)  Round gravity drip to nearest whole number (drops per minute) NOTE: on the Bb problems- you only provide the numeric answer – NO units of measure. Any text added will cause the answer to be scored as incorrect! 1.

A patient with pneumocystis pneumonia is ordered to have Cleocin (clindamycin) 900mg in 100 D5W over 45 minutes. What rate will the nurse set on the infusion pump (mL/hr)

100 ÷ 45 = 2.222222 x 60 = 133.333 round to 133.3

2.

A patient receiving TPN is ordered to have 250mL of 10% lipids administered over six hours. What rate (mL/hr) will the nurse set on the infusion pump?

250 ÷ 6 = 41.6666

3.

round to 41.7

The order reads: Vancomycin 1 g IV every 12 hours. The drug is prepared in 250mL NSS. The pharmacist labeled the drug to be infused over 90 minutes. What rate is set on the infusion pump (mL/ hour)?

250 ÷ 90 = 2.77777 x 60 = 166.666 round to 166.7

4.

A patient with ischemic bowel is ordered to have Maxipime (cefepime) 2 g in 50 mL NSS over 30 minutes. What rate will the nurse set on the infusion pump (mL/hr)?

50 ÷ 30 = 1.66666 x 60 = 100

M. Bartges

5. A patient in chronic renal failure has symptomatic bradycardia and is ordered an emergent loading dose of 10% Calcium gluconate in 5 mL IVP over 10 minutes. How much volume will the nurse administer over each minute interval? 5 ÷ 10 = 0.5

6. The same patient (question 5): After the loading dose is completed, the nurse is to follow with an infusion of Ca Gluconate 1 g in 500 mL over 6 hours. What rate is set on the infusion pump (mL/ hour)?

500 ÷ 6 =83.3333 round to 83.3

7. A ventilated patient has a lorazepam infusion of 20 mL per hour. The drug is mixed as 40mg lorazepam in 250 mL D5W. How many mg lorazepam is the patient receiving each hour?

40 ÷ 250 = 0.16 x 20 = 3.2

8. A newly intubated 70 kg patient is ordered to start propofol at 5mcg / kg/ minute. The drug is dispensed as 500 mg in a 50 mL glass bottle. What rate is set on the infusion pump (mL/ hour)? First determine hourly dose in mcg 5 x 70 x 60 = 21,000 (hourly dose in mcg) Then determine drug concentration using mcg 500,000 ÷ 50 = 10,000 (number of mcg in each mL [drug concentration]) hourly rate is 21,000 ÷ 10,000 or

M. Bartges

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