Dosage Calculation Practice Worksheet 3 PDF

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Great practice problems to help master dosage calculations...

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1. A 280 pound man weighs how many kg? Answer: 127 kg

2. Order: Lasix (furosemide) 40mg PO daily Available: tablets labeled 20mg How many tablets will the nurse administer? Answer: 2 tablets

3. Administer D5LR at 75ml/hr. The drop factor is 10gtt/ml Calculate the flow rate in gtt/min Answer: 13gtt/min

4. Administer 1000ml D5W in 6hr. The drop factor is 15gtt/ml. Calculate the flow rate in gtt/min. Answer: 42gtt/min

5. Infuse 200ml of NSS in 2hr. The drop factor is 20gtt/ml. Calculate the flow rate in gtt/min. Answer: 34 gtt/min

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6. Order: Gentamicin (garamycin) 55mg IM q8hr. Available: Gentamicin (garamycin) 80mg per 2ml. a. How many ml will the nurse administer for one dose? b. How many ml will the nurse administer for the day? Answers: A) 1.4 mL in one dose B) 4.2 mL per day

7. Ampicillin 750mg IV q4hr. Available: 2000mg per 5ml. a. How many ml will the nurse administer for one dose? b. How many ml will the nurse administer for one day? Answer: a. 1.9 mL for one dose b. 5.7 mL for one day

8. An IV of 500ml NSS is to infuse at 60ml/hr. How long will the infusion take? If the IV was started at 2000 (chronological time, military time), when would the infusion be completed (state in chronological time; military time)? Answers: The infusion will take 8 hours and 20 minutes. The infusion will finish at 0420

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9. Order: Gentamicin (garamycin) 50mg IVPB q8h for a child weighing 40lb. The recommended dosage for a child is 6 to 7.5mg/kg/day divided q8h. Is the dosage ordered safe? The child weighs 18.2kg The safe dose range for this child based on their weight is 109.2 – 136.5 mg per day divided q8 hours. The current order would give a daily total of 150 mg per day. No the order is not within the safe range.

10. Order: Phenobarbital 10mg PO q12h is ordered for a child weighing 9 pounds. The recommended maintenance dose is 3 to 5mg/kg/day q 12h. Is the dosage ordered safe? Answer: The child weighs 4.1 kg The safe dose range is 12.3 – 20.5 mg per day every 12 hours The order is 10 mg q 12 hours No this order does not fall within the safe dose range.

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