Deck 11: Flow Rates and Dosage Rates for Intravenous Medications

Question 1

An IVPB is infusing at 100 mL/h.The strength of the solution in the bag is 0.5 mg/mL.What is the dosage rate in mg/h?

A)300 mg/h
B)50 mg/h
C)200 mg/h
D)120 mg/h

Answer 1

50 mg/h

Question 2

Order: Avelox (moxifloxacin HCl)400 mg IVPB daily for five days. The label on the IV reads moxifloxacin 400 mg/250 mL 0.9 % saline,give over 60 minutes.At how many milliliters per hour will you set the infusion pump?

A)250 mL/h
B)400 mL/h
C)5 mL/h
D)7 mL/h

Answer 2

250 mL/h

Question 3

Order: Amikin (amikacin sulfate)350 mg IVPB in 100 mL DW stat.,infuse in 1h. Calculate the flow rate in drops per minute.The drop factor is 10 gtt/mL.

A)600 gtt/min
B)17 gtt/min
C)21 gtt/min
D)6 gtt/min

Answer 3

17 gtt/min

Question 4

An IV is infusing at 50 mL/h.The strength of the solution in the bag is 150 mg/mL.What is the dosage rate in g/h?

A)7.5g/h
B)7500 g/h
C)3 g/h
D)300 g/h

Question 5

Order: Heparin sodium 25,000 units in 250 mL DW IVPB,infuse at 1500 units /h. Calculate the flow rate in milliliters per hour.

A)15 mL/h
B)17 mL/h
C)25 mL/h
D)12 mL/h

Question 6

Order: Potassium chloride 20 mEq in 1000 mL D/NS (pre-mixed solution)IV,infuse at 2 mEq/h. Calculate the rate in mL/h.

A)100 mL/h
B)10 mL/h
C)250 mL/h
D)150 mL/h

Question 7

Order: DTIC-Dome (dacarbazine)250 mg/m IV for five days. The label on the vial reads 100 mg,and the manufacturer's directions states to reconstitute with 9.9 mL of sterile water for injection,yielding a strength of 10 mg/mL,further dilute in 250 mL of D₅W,and infuse over 60 minutes.
Calculate the rate of flow in milliliters per hour for a patient who weighs 92 kilograms and is 183 centimeters tall.

A)250 mL/h
B)304 mL/h
C)367 mL/h
D)540 mL/h

Question 8

Order: Zofran (ondansetron HCl)4 mg IVPB,add to 50 mL D1/2 NS and infuse in 20 min.via pump. The label on the vial reads 2 mg/mL.At how many milliliters per hour will you set the infusion pump (mL/h)?

A)156 mL/h
B)50 mL/h
C)104 mL/h
D)54 mL/h

Question 9

Order: Add 125 mg of morphine sulfate to DW 250 mL stat.and infuse at 0.005 mg/kg/min. Calculate the flow rate in milliliters per hour for the patient who weighs 95 kilograms.

A)0.2 mL/h
B)28.5 mL/h
C)0.95 mL/h
D)57 mL/h

Question 10

Order: Heparin 20,000 units in 1000 mL 0.9% NaCl stat.,infuse at 25 mL/h. Calculate the units per hour and determine if the dose is within the normal daily range (20,000-40,000 units in 24 h).

A)25,000 units/h,and the dose is within the normal daily range
B)500,000 units/h,and the dose is higher than the normal daily range
C)500 units/h,and the dose is lower than the normal daily range
D)0.8 units/h,and the dose is lower than the normal daily range

Question 11

An IV is infusing at 125 mL/h.The strength of the solution in the bag is 10 mcg/mL.What is the dosage rate in mg/h?

A)1250 mg/h
B)1.25 mg/h
C)750 mg/h
D)75 mg/h

Question 12

Order: Vancomycin HCl 1 g in 200 mL DW IVPB,infuse in 60 min. Calculate the flow rate in drops per minute.The drop factor is 20 gtt/mL.

A)17 gtt/min
B)167 gtt/min
C)67 gtt/min
D)30 gtt/min

Question 13

Order: Mefoxin (cefoxitin sodium)1 g IVPB q.6h. The manufacturer recommends reconstituting the 1 g vial with 10 mL of sterile water,adding it to 100 mL of D₅W,and infusing the medication over 60 minutes.At how many drops per minute will you set the IV to infuse if the drop factor is 15 gtt/mL?

A)250 gtt/min
B)28 gtt/min
C)10 gtt/min
D)25 gtt/min

Question 14

Order: Hycamtin (topotecan HCl)1.5 mg/mIV daily for five days,repeat every 21 days. The label on the vial reads 4 mg,and the manufacturer's directions state: "Reconstitute each 4 mg with 4 mL of sterile water.Withdraw the dose and further dilute in 50 mL D₅W and infuse over 30 minutes."
Calculate the rate of flow in milliliters per hour for a patient who weighs 92 kg and is 183 cm tall.

A)106 mL/h
B)114 mL/h
C)100 mL/h
D)87.5 mL/h

Question 15

Order: Verapamil HCl 0.075 mg/kg IV push over two min. The label on the vial reads 5 mg/2 mL,and the patient weighs 80 kg.How many mL/min.will you administer?

A)2.4 mL/min
B)1.2 mL/min
C)0.6 mL/min
D)3 mL/min

Question 16

Order: Zofran (ondansetron HCl)0.15mg/kg IVPB 30 minutes before chemotherapy. The label on the vial reads 2 mg/mL,and the manufacturer's directions states to dilute in 50 mL D₅W and infuse in 15 minutes.Calculate the rate of flow in drops per minute for a patient who weighs 55 kilograms.The drop factor is 10 gtt/mL.

A)216 gtt/min
B)72 gtt/min
C)36 gtt/min
D)14 gtt/min

Question 17

Order: Nitroglycerine 50 mg in 250 mL normal saline,infuse at 10 mcg/minute. Calculate the rate in mL/h.

A)3 mL/h
B)2 mL/h
C)0.5 mL/h
D)20 mL/h

Question 18

Order: Pepcid (famotidine)20 mg IVPB q.12h. The label on the 4 mL vial reads 10 mg/mL.The manufacturer recommends adding the famotidine to 50 mL of D₅W and infusing the medication over 60 minutes.At how many microdrops per minute will you set the IVPB solution to infuse?

A)52 mcgtt/min
B)20 mcgtt/min
C)125 mcgtt/min
D)50 mcgtt/min

Question 19

An IV is infusing at 80 mL/h.Potassium chloride 20 mEq was added to 1000 mL of IV solution.How much potassium chloride is administered per hour in mEq/h?

A)4000 mEq/h
B)4 mEq/h
C)1.6 mEq/h
D)0.16 mEq/h

Question 20

Order: Cipro (ciprofloxacin)400 mg in 200 mL DW IVPB. The patient weighs 175 pounds,and is to receive 6 mg/kg/h.Calculate the flow rate in drops per minute.The drop factor is 15 gtt/mL.

A)50 gtt/min
B)1066 gtt/min
C)60 gtt/min
D)262 gtt/min

Question 21

Order: Heparin 25,000 units in 1000 mL 0.09% NS,infuse at 100 mL/h. Calculate the units per day if the dose is within the normal daily range (20,000-40,000 units in 24 h).

A)60,000 units,which is within the normal daily range
B)2500 units,which is not within the normal daily range
C)25,000 units,which is within the normal daily range
D)60,000 units,which is not within the normal daily range

Question 22

Order: Digoxin (Lanoxin)0.25 mg IV daily. All dosages of digoxin are to be given over at least five minutes.The drug is supplied 0.25 mg/mL,which is further diluted in 4 mL of fluid.How many mL of medication would you administer per minute?

A)1 mL per minute
B)0.2 mL per minute
C)2 mL per minute
D)5 mL per minute

Question 23

Order: Furosemide (Lasix)80 mg IVP now. Furosemide is ototoxic at high doses if given faster than 4 mg/minute.How many minutes would it take to administer this dosage?

A)2 minutes
B)360 minutes
C)80 minutes
D)20 minutes

Question 24

Order: Heparin 40,000 units in 1000 mL 0.9% NS,infuse at 40 mL/h. Calculate the units per day and determine if the dose is within the normal daily range (20,000-40,000 units in 24 h).

A)1600 units/d,which is lower than the normal daily range
B)38,400 units/d,which is within the normal daily range
C)38,400 units/d,which is not within the normal daily range
D)1600 units/d,which is higher than the normal daily range

Question 25

If 150 mg of a drug is ordered IVP stat over two minutes,and the concentration of the drug is 75 mg/mL,find the total number of milliliters,and indicate how many milliliters you will administer per minute.

A)10 mL total; 5 mL/min
B)2mL total; 1 mL/min
C)1 mL total; 1 mL/min
D)4 mL total; 2 mL/min

Question 26

Order: Phenytoin (Dilantin)15 mg/kg loading dose IV push stat. Phenytoin is supplied 50 mg/mL and is to be administered at 25 mg/min.How many mL would you administer over how many minutes if the client weighs 65 kilograms?

A)19.5 mL over 39 minutes
B)19.5 mL over 20 minutes
C)30 mL to be given over 1 hour
D)30 mL to be given over 30 minutes