University of South Alabama College of Nursing HSC 342 Math Review 2 1. The physician has ordered 2 gr of acetaminophen (Tylenol) po prn fever greater than 101.5oF. The drug is supplied as 30 mg per milliliter. How many mL will you give? 2. Mr. Jackson has been prescribed 120 mg of Garamycin (Gentamycin sulfate) to be mixed into a 500 mL bag of D5W. You have a 20-ml multidose vial with 40 mg/mL. How many milliliters will you draw up into a syringe to mix in the IV bag? 3. The recommended dose of clindamycin is 25 mg/kg/day. The child weighs 50 pounds. How many milligrams of clindamycin will the child get every 8 hours? (Round to the nearest whole number.) 4. Order: 38 units of Humulin N subcutaneous every morning. Available: Humulin N –100. How many mL will you give? Provide answer to the 100ths place. 5. Available: 40 mEq potassium chloride in 1020mL of D5W, infuse at a rate of 1.5 mEq per hour. The infusion set has a drop factor of 10. a. What will be the hourly rate (mL/h) to the nearest whole number? b. How many gtts/min should infuse? 6. The physician has prescribed a continuous IV of heparin 10,000 units in 500 mL of D5W to infuse at a rate of 20 units/kg/hour. The patient weighs 38 kg. a. How many total units of heparin should the patient receive per hour? b. What will be the hourly rate (mL/hr) to deliver the ordered dose? 7. The physician has ordered amiodarone hydrochloride (Cordarone Intravenous) 900 mg to be added to 500 mL of D5W and run IV at a rate of 1 mg/min for 6 hours. The manufacturer’s direction agrees with the physician’s order. The available 3 mL vials of Cordarone Intravenous contain 50 mg per 1 mL. The infusion set delivers 60 drops per mL. a. How many mL of Cordarone Intravenous will be added to the D5W? b. How many mL/ minute must infuse to deliver the prescribed amount? (Round to the nearest hundredth.) c. How many mL/hr should the electronic infusion device be set to deliver? (Round to the nearest 100th) 8. Physician’s order: Dobutamine (Dobutrex) 500 mg in 500 mL of D5W, 6 mcg/kg/min IVPB. Weight 145 lb. a. What is the flow rate on the infusion pump in mL/hr? (Give whole number answer.) b. If the above infusion begins at 0600, when will it be completed (Round answer to the nearest whole number)? . Answers 1. 4 mL mL 60mg 2 gr  * * dose 30mg gr 1 2. 3 mL 1mL 120mg  * bag 40mg bag 3. 189 mg 25mg 1kg 50lbs 1day  * * * dose kg / day 2.2lbs 1 3doses 4. 0.38 5a. 38 5b. 6 mL mL 38units  * dose 100units dose mL 1020mL 1.5mEq  * hr 40mEq hr gtts 10 gtts 1020mL 1.5mEq hr  * * *  6.375 min mL 40mEq hr 60 min 6a. 760 units 20units 38kg  * hr kg / hr 1 6b. 38 mL 500mL 20units 38kg  * * hr 10,000units kg / hr 1 7a. 18 mL 1mL 900mg  * bag 50mg bag 7b. 0.58 mL 518mL 1mg  * min 900mg min 7c. 34.53 mL 518mL 1mg 60 min  * * hr 900mg min hr 8a. 24 mL 500mL 1mg 6mcg 1kg 145lbs 60 min  * * * * * hr 500mg 1000mcg kg / min 2.2lbs 1 hr 8b.. First, determine how many hours it will take to complete the infusion. hr hr 500mL  * 1 24mL 1 Next, add the 21 hours to 0600, which gives 0300 the next day 21