Nursing Dosage Calculation Test 1 – Flashcards
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You are preparing to infuse Ensure 1/2 strength at 60 mL/hour. The Ensure is available in 240 mL cans. You mix one can of ensure with 240 mL of water to obtain the 1/2 strength. How many hours will it take for the feeding to infuse? (Place only the numerical value in the space provided.)
answer
240 Ensure + 240 water = 480 total volume. 480/60 mL/hr = 8 hours.
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A client is receiving Glucerna 180 mL at 35 mL/hour. How many hours will it take for the Glucerna to infuse? (Round to the nearest 10th decimal and place only the numerical value in the space provided.) Infusion time:
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180 mL/35 mL per hour = 5.14 hours = 5.1 hours
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A client is receiving Osmolyte 240 mL at 40 mL per hour via an enteral tube. How many hours will it take the Osmolyte to infuse? (Place only the numerical value in the space provided.)
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240 mL/40 mL/hr = 6 hours
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The provider prescribes aminophylline 15 mcg/kg/min for a child with status asthmaticus. The child weighs 44 pounds. The aminophylline bag is labeled 500 mg/500 mL of NS. What rate will you program the infusion pump to deliver? (Place only the numerical value in the space provided.)
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44/2.2 = 20 kg; 15/1000 = 0.015 X 20 = 0.3 X 60 = 18 mg/hr; 18 mg/500 mg X 500 mL = 18 mL/hr
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The provider prescribes aminophylline 15 mcg/kg/min for a child with status asthmaticus. The child weighs 44 pounds. The aminophylline bag is labeled 500 mg/500 mL of NS. What volume will you set the infusion pump to infuse? (Place only the numerical value in the space provided.)
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You infuse the total volume of the bag which is 500 mL.
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A client is prescribed dopamine 8 mcg/kg/min. The client weighs 198 pounds. The dopamine available is 800 mg in 500 mL of D5W. What rate will you infuse this medication using an IV pump? (Place only the numerical value in the space provided.)
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198/2.2 = 90 kg; 8/1000 = 0.008 X 90 = 0.72 X 60 = 43.2 mg/hr; 43.2/800 X 500 = 27 mL/hr
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You enter a client's room and the pump reads 45 mL/hour with a volume to be infused of 500 mL. The label on the bag reads lidocaine 2 g in 500 mL of D5W. What dose in mg/min of the lidocaine is this client receiving? (Place only the numerical value in the space provided.)
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X g/2 g X 500 mL = 45 mL/hr; Multiple each side of the equation by 2. 500X = 90. X=90/500 = 0.18 g/hr; 0.18 X 1000 = 180 mg/hr. 180/60 = 3 mg/min
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A client had 1 glass of apple juice, 1 bowl of oatmeal, 1/2 cup coffee, 1 carton of milk, and 1 slice of toast for breakfast. A juice glass is 3 ounces, a coffee cup is 6 ounces and a carton of milk is 8 ounces. How many mL of fluid did the client drink this meal? (Place only the numerical value in the space provided.)
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1 glass of juice is 3 oz, 1/2 cup of coffee is 3 oz, and 1 carton of milk is 8 oz. 3+3+8 =14 oz; 14 X 30 = 420 mL
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A client is receiving 1000 mL of 0.9% sodium chloride at 100 mL per hour. The infusion began at 0800. How many mL of fluid will be remaining at 1330? (Place only the numerical value in the space provided.)
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0800 to 1330 is 5.5 hours; 100 mL/hr X 5.5 hrs = 550 mL infused; 1000 mL-550 mL = 450 mL remaining
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A client is to receive 500 mL of D5 1/2 NS with 30 mEq KCL over four hours. How many mL/hr will you set the IV pump? (Place only the numerical value in the space provided.)
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500 mL/4 hours = 125 mL/hr
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A client is to receive chloramphenicole sodium succinate (Chloromycetin) 1 g IV Q 6 hours over 15 minutes. The drug book states to reconstitute the drug with 10 mL of sterile water for injection to provide a concentration of 100 mg/mL and then to further dilute it in 50 mL of D5W for intermittent infusion. How many mL/hour will you infuse this medication as an intermittent infusion? (Place only the numerical value in the space provided.)
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10 mL + 50 mL = 60 mL; 60 mL/0.25 hours = 240 mL/hour
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A client is prescribed clindamycin (Cleocin) 750 mg IV Q 12 hours. The pharmacy sends Cleocin 750 mg in 100 mL of D5W. The drug books states you can infuse this medication over one hour. What rate will you infuse this medication using an IV pump? (Place only the numerical value in the space provided.)
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100 mL/1 hr = 100 mL/hr
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A client is prescribed 1 liter of D5 ½ NS to infuse over 8 hours. What rate will you infuse this bag of fluids using an IV pump? (Place only the numerical value in the space provided.)
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1000 mL/8 hours = 125 mL/hr
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A client is to receive 1 liter of D5RL at 150 mL/hour. The drop factor of the tubing is 10 gtt/mL. What rate by gravity will you infuse this fluid? (Place only the numerical value in the space provided.)
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150/60 X 10 = 25 gtt/min
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A client is to receive 2 L of LR over 2 hours. The drop factor of the tubing is 10 gtt/mL. What rate will you infuse this fluid by gravity? (Place only the numerical value in the space provided.)
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2 L X 1000 = 2000 mL; 2000 mL/120 min X 10 = 166.6 = 167 gtt/min
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A client's provider prescribed metoclopramide (Reglan) 15 mg IV mixed in 50 mL of D5W. The drug book indicates you can infuse this medication over 20 minutes. The drop factor of the tubing is 10 gtt/mL. What rate will you infuse this medication by gravity? (Place only the numerical value in the space provided.)
answer
50/20 X 10 = 25 gtt/min
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A client is to receive moxifloxacin (Avalox) 400 mg IV over 60 minutes. The pharmacy sends Avalox 400 mg in 100 mL. The drop factor of the tubing is 12 gtt/mL. How many mL/hour will you infuse this medication? (Place only the numerical value in the space provided.)
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100 mL/1 hour = 100 mL/hr
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You are preparing to infuse NS at 150 mL/hour. There is 1000 mL of fluid in the IV bag. The drop factor of the tubing is 10 gtt/mL. What rate will you infuse this fluid by gravity? (Place the only numerical value in the space provided.)
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150/60 X 10 = 25 gtt/min
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A client is receiving 1000 mL of RL at 140 mL/hr. The drop factor is 15 gtt/mL. What rate will you infuse this fluid by gravity? (Round to the nearest whole number and place only the numerical value in the space provided.)
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140/60 X 15 = 34.9 = 35 gtt/min
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A client is prescribed tobramycin 1.2 g IV Q 12 hours with instructions to dilute the medication in 250 mL of NS and to infuse over 2 hours. The drop factor of the tubing is 20 gtt/mL. What rate will you infuse this medication by gravity? (Round to the nearest whole number and place only the numerical value in the space provided.)
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250/120 X 20 = 41.6 = 41 gtt/min
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You are preparing to administer torsemide (Demadex) 40 mg IVP. The drug reference book states you can administer 40 mg of Demadex at a rate of 40 mg/min. The drug is available in 20 mg/2 mL. How many minutes will you infuse this medication? (Place only the numerical value in the space provided.)
answer
40 mg/min = 1 min
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A client is prescribed famotidine (Pepcid) 20 mg IVP Q 12 hours. The vial is labeled Pepcid 10 mg/mL. How many mL should you administer? (Place only the numerical value in the space provided.)
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20 mg/10 mg X 1 mL = 2 mL
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You are preparing to administer famotidine 20 mg IVP. The drug reference book states to dilute famotidine with 5 mL of NS before giving IVP over 2 minutes. How fast should this medication be pushed? (Place only the numerical value in the space provided.)
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drug book states give over 2 minutes
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You are preparing to administer levothyroxine 1.5 mL IVP. The drug reference book states to dilute levothyroxine with 5 mL of NS. How many total mL will you administer after you properly dilute the medication? (Provide your answer in the nearest 10th and place only the numerical value in the space provided.)
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1.5 mL + 5 mL = 6.5 mL
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You are preparing to administer 0.33 mL of morphine sulfate IVP and the drug reference book states to dilute morphine with 5 mL of sterile water before giving IVP over 4 to 5 minutes. Once you dilute the morphine, how many mL will you administer? (Round to the nearest 10th decimal and place only the numerical value in the space provided.)
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0.33 mL + 5 mL = 5.33 mL = 5.3 mL
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You are preparing to administer 5 mg of morphine sulfate IVP and the drug reference book states to dilute morphine with 5 mL of sterile water before giving IVP over 4 to 5 minutes. How fast should this medication be given? (Place only the numerical value in the space provided.)
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5 mL can be delivered over 4 to 5 minutes.
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A client with a history of gout states he takes allopurinol (Zyloprim) 450 mg PO BID. The bottle containing the medication is labeled as containing 300 mg scored tablets. How many tablets should the client take per dose? (Place your answer in decimal to the 10th.) (Place only the numerical value in the space provided.)
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450 mg/300 mg X 1 tab = 1.5 tab
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A client is experiencing hypertension. The provider prescribes clonidine 300 mcg PO BID with the first dose now. The tablets on hand are 0.3 mg each. How many tablets will you administer? (Place only the numerical value in the space provided.)
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0.3 mg X 1000 = 300 mcg; 300 mcg/300 mcg X 1 tab = 1 tab
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Each morning before breakfast a client takes glyburide (Micronase) 0.005 g PO. The label of the drug states there are 5 mg per tablet. How many tablets will the client need to take? (Place only the numerical value in the space provided.)
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0.005 g X 1000 = 5 mg; 5mg/5mg X 1 tab = 1 tab
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A client is to receive methyldopa (Aldomet) 0.5 g PO Q daily. The pharmacy sends methyldopa 250 mg tablets. How many tablets will you administer? (Place only the numerical value in the space provided.)
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0.5 g X 1000 = 500 mg; 500 mg/250 mg X 1 tab = 2 tabs
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A client receiving chemotherapy for the treatment of breast cancer is to receive ondansetron (Zofran) 6 mg PO now. You have ondansetron 4 mg/5 mL available. How many mL of the ondansetron will you administer? (Round to the nearest 10th.) (Place only the numerical value in the space provided.)
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6 mg/4mg X 5 mL = 7.5 mL
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A client takes 0.3 g of phenytoin (Dilantin) daily by mouth in three divided doses. The available Dilantin is labeled 100 mg capsules. How many capsules will you administer per dose?
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0.3 g = 300 mg per day/ 3 doses per day = 100 mg per dose. 100 mg/100 mg X 1 cap = 1 cap.
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A client has a medication compounded into a syrup labeled 50 mg per 5 mL. The instructions indicate the client should take 150 mg per dose. How many mL of the syrup should the client take? (Round to the nearest 10th)(Place only the numerical value in the space provided.)
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150 mg/50 mg X 5 mL = 15
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A client who sustained a knee injury while skiing needs to receive an injection of betamethasone (Celestone) 10 mg IM. Available is a 30 mL multidose vial labeled 4 mg/mL. How many mL will you administer? (Place your answer to the 10th decimal and place only the numerical value in the space provided.)
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10 mg/4 mg X 1 mL = 2.5 mL
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Prior to a bronchoscopy a client is prescribed diazepam (Valium) 7.5 mg IM on call to the endoscopy lab. You have diazepam 5 mg/mL. How many mL will you administer? (Place your answer in the 10th decimal and place only the numerical value in the space provided.)
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7.5 mg/5 mg X 1 mL = 1.5 mL
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A client with deep vein thrombosis is prescribed heparin 6000 units SC Q 12 hours. The vial is labeled heparin 10,000 units/mL. How many mL will you administer? (Place your answer in decimal and place only the numerical value in the space provided.)
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6000 units/10,000 units X 1 mL =0.6 mL
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To prevent deep vein thrombosis a provider prescribes heparin 3500 units SC Q 12 hours for a client who had surgery yesterday. The vial of heparin is labeled 5000 units per mL. How many mL will you administer? (Place your answer in decimal not fraction and place only the numerical value in the space provided.)
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3500 units/5000 units X 1 mL = 0.7 mL
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A client states he is experiencing a great deal of pain. He has meperidine (Demerol) 30 mg IV prescribed. The available meperidine is labeled 50 mg/mL. How many mL will you administer? (Place your answer in decimal not fraction and place only the numerical value in the space provided.)
answer
30 mg/50 mg X 1 mL = 0.6 mL
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The safe dosage range for a child receiving cefuroxime (Zinacef) is 50-100 mg/kg/day. The child weighs 55 lb. What is the safe range of this medication in mg for this child? (Provide only the numerical values in the spaces below.) Safe daily dosage range:
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55/2.2 = 25 kg; 50 X 25 = 1250 mg and 100 X 25 = 2500 mg
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After surgery a child is prescribed codeine 15 mg/m2/day PO Q 6 hours PRN. The child's BSA is 0.49. How many mg will you administer per dose? (Calculate the daily dose to the 100th decimal and round your answer to the 100th decimal.) (Place only the numerical value in the space provided.)
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15 X 0.49 = 7.35; 7.35/4 doses = 1.837 = 1.84 mg/dose
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A neonate weighing 3800 g is to receive digoxin (Lanoxin) 20 mcg/kg/day via the feeding tube. How many mcg will the client receive per day? (Place only the numerical value in the space provided.)
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3800 g/1000 = 3.8 kg; 20 X 3.8 = 76 mcg/day
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A child is prescribed hydroxyzine (Vistaril) 1.1 mg/kg/day given PO Q 4 hours as necessary. The child weighs 46 pounds. How many mg will you administer each time you administer the medication? (Round weight to the nearest 10th and doses to the nearest 100th.) (Place only the numerical value in the space provided.)
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46/2.2 = 20.90=20.9; 1.1 X 20.9 = 22.99 mg/day; 22.99/6 doses per day = 3.831= 3.83 mg/dose
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A child is to receive 150,000 units/kg/day of a medication IV in equal divided doses Q 6 hours. The child weighs 12 kg. The medication is labeled 1,300,000 units per 2 mL. How many mL will you administer each dose? (Round the dose to the 100th decimal.) (Place only the numerical value in the space provided.)
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150,000 X 12 = 1,800,000 units per day/4 doses per day = 450,000 units per dose; 450,000 units/1,300,000 units X 2 mL = 0.692 = 0.69 mL/dose
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The vial of a powdered medication is labeled ampicillin (Omnipen-N) 250 mg. The instructions for reconstitution direct adding 0.9 mL sterile water to yield 125 mg per 0.5 mL. The client is prescribed ampicillin (Omnipen-N) 350 mg. How many mL will you administer? (Place your answer in 10th decimal and place only the numerical value in the space provided.)
answer
350 mg/125 mg X 0.5 mL = 1.4 mL
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A client is to receive a 0.5 g of a drug IM. The vial is labeled with 750 mg. It is a powder and included on the vial are instructions to add 3.4 mL of sterile water to provide an approximate volume of 3.6 mL. How many mL will you administer? (Round your answer to the 10th decimal and place only the numerical value in the place provided.)
answer
0.5 g X 1000 = 500 mg; 500 mg/750 mg X 3.6 mL = 2.3999 = 2.4 mL
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A client is to receive 17 units regular insulin and 45 units NPH insulin at 0700 daily. The syringe available provides 100 units/1 mL. How many units will you administer at 0700? (Place only the numerical value in the space provided.)
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17 + 45 = 62 total units
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You are preparing to initiate an insulin drip at a rate of 2 units/hour. The available insulin is 50 units Regular insulin/250 mL NS. What rate will you program the infusion pump to deliver this medication? (Place only the numerical value in the space provided.)
answer
2 u/50 u X 250 mL = 10 mL/hr
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A client is to receive heparin 1200 units/hour. The bag is labeled with 25,000 units/250 mL D5W. What rate will you program the infusion pump? (Place only the numerical value in the space provided.)
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1200 u/25,000 u X 250 mL = 12 mL/hour
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A client is prescribed heparin at 16 units/kg/hour. The client weighs 70 kg. The heparin available is 25,000 units/250 mL. What rate will you program the infusion pump? (Round to the nearest 10th decimal and place only the numerical value in the space provided.)
answer
16 X 70 = 1120 units/hour; 1120 u/25,000 u X 250 mL = 11.2 mL/hour
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You are preparing to administer Keflin 4 g in 50 mL of NS Q 8 hours over 20 minutes. What rate will you program the infusion pump to deliver this medication? (Round your hours to the nearest 1000th decimal OR convert your minutes to hours after calculating the rate, round your answer to the nearest whole number, and place only the numerical value in the space provided.)
answer
20 minutes is 0.333 hours therefore 50/0.333 = 150.15 = 150 mL/hr OR 50mL/20 min = 2.5 X 60 min in a hour = 150 mL/hr
