Dosage Calculation Practice Worksheet 2

1. Order: Amoxicillin 0.25 g p.o. every 8 hours. Available: Amoxicillin 125mg tablets. How many tablets will the nurse give per dose? Answer: 2 tabs 2. Order: Zofran 8 mg p.o. t.i.d. Available: Zofran in a 100mL bottle labeled 4 mg/tsp. How many mL will the nurse administer for each dose? Answer: 10 mL 3. Order: Morphine gr 1/10 Available: Morphine 10mg/mL How many mL will the nurse give? Answer: 0.6 mL 4. Give Fortaz 50 mg/kg p.o. t.i.d. to a child who weighs 25.5 kg. Fortaz is available in an oral suspension labeled 100mg/mL. How many mL would the nurse administer per dose? Answer: 12.8 mL 5. Give Ceclor 45 mg/kg/day p.o. in 3 divided doses for a patient who weighs 66 pounds. A 75 mL stock medication is labeled Ceclor 125mg/mL. How many mL would the nurse administer per dose? Answer: 3.6 mL 6. LR 125 mL/hr via gravity flow using tubing calibrated at 15 gtt/mL. Calculate the flow rate. Answer: 31 gtts/min 7. One liter NS to infuse over 24 hours using a microdrip (gravity flow). Calculate the flow rate. Answer: 42 gtts/min 8. At the change of shift you notice 200 mL left to count in the I.V. bag. The I.V.is infusing at 80 mL/hr. How much longer will the I.V. run? (Express your answer in hours and minutes.) Answer: 2 hours and 30 minutes 9. Keflin 2g in I00 mL DsW IVPB over 20 minutes. The I.V. tubing is 15 gtt/mL. Calculate the flow rate. Answer: 75 gtts/min 10. The physician writes an order for heparin 900 units/hr. The label on the I.V. bag reads: Heparin 10,000 units in 500 mL D5W. How many mL/hr will deliver the correct dose? Answer: 45 mL/hour 11. Administer Heparin 1,000 units/hr from an l.V. bag mixed 40,000 units in 1 L DsW. How many mL/hr will deliver the correct amount of heparin? Answer: 25 mL/hr 12. The patient's heparin is infusing at 28 mL/hr on an infusion pump. The bag of fluid is mixed 20,000 units of heparin in 500 mL D5W. What hourly dose of heparin is the patient receiving? Answer: 1,120 units/hour 13. The patient's heparin drip is infusing at 11 mL/hr on an infusion pump. The bag of fluid is mixed 25,000 units of heparin in 250 mL DsW. What hourly dose of heparin is the patient receiving? Answer: 1,100 units/hour 14. Give Regular insulin by continuous I.V. infusion at 20 units/hr. The solution is 250 mL NS with 100 units of Regular insulin. What rate on the infusion pump will deliver the correct dose? Answer: 50mL/hour 15. Administer a Tbeophylline drip at 40 mg/hr 1.V. The solution is 250 mL DsW +Theophylline 500 mg. What rate on the infusion pump will deliver the correct dose? Answer: 20mL/hour 16. Give Tridil 15mcg/minute. Tridil is mixed 50 mg in 500 mL DsW. What rate on the infusion pump will deliver the correct dose? Answer: 9mL/hour 17. Give Nitroprusside 5 mcg/kg/minute via continuous infusion for a patient weighing 205 lbs. Nitroprusside is available in a solution of 200 mg in 250 mL D5W. What rate on the infusion pump will deliver the correct dose? Answer: 35mL/hour 18. A lidocaine drip is infusing at 30 mL/hr on an infusion device. The drug is mixed 2 g in 500 mL DsW. How many mg/minute is the patient receiving? Answer: 2mg/min 19. Aminophylline is infusing at 30mL/hr. The drug is mixed 250 mg in 500 mL D5W. How many mg/hr is the patient receiving? Answer: 15mg/hour 20. Give propofol 10mcg/kg/minute. The infusion is mixed propofol 250 mg in 250 mL DsW. The patient weighs 168pounds. What rate on the infusion pump will deliver the correct dose? Answer: 46mL/hour