Unit 4 Homework

The physician ordered heparin 850 units/hour. There are 25,000 units of heparin in 500 mL of D5W. Calculate the correct IV flow rate in milliliters per hour. A. 17 B. 20 C. 18 D. 19

A. 17 When solving any problem, first check that the order and the supply are in the same weight measure. For this problem, no equivalent is necessary. Estimate the amount to give. Formula Method: 850 units/25,000 units × 500 mL = 425,000/25,000 = 17 mL/hour.

The physician ordered 20 mg of a drug by IVP, to be given over 5 minutes, q12h. The medication is available as 25 mg/5 mL. How many milliliters would the nurse give for each dose? How many milliliters of medication would be given over each minute? A. 5; 1 B. 5; 0.8 C. 4; 0.8 D. 4; 1

C. 4; 0.8 Proportion (Fractions): 5 mL/25 mg = x mL/20 mg; 25 x = 100/25 = 4 mL. To estimate the milliliters given over each minute, divide the total milliliters by the total minutes (4 ÷ 5 = 0.8 mL/minute).

A client takes 0.125 mg of a medication, three times daily. How many milligrams would the client take in 4 days? A. 1.125 B. 1.5 C. 0.75 D. 0.375

B. 1.5

The physician prescribed 0.25 g of a medication that is available in 0.5-g tablets. How many tablets would the nurse give? A. 1 B. 1/2 C. 1 1/2 D. 2

B. 1/2

The faculty member tells the nursing student to obtain an IV microdrip tubing set. What is the drop factor on an IV microdrip? A. 60 gtt/mL B. 15 gtt/mL C. 20 gtt/mL D. 10 gtt/mL

A

The physician prescribed 20 mg of a medication that is available 10 mg per 15 mL. How many milliliters would the nurse administer? A. 20 B. 30 C. 15 D. 10

B. 30

The physician prescribed 60 mg of clonazepam available as a 40-mg scored tablet. The client was advised to take how many tablets for each dose? Use proportion (ratios and fractions) to solve this problem. A. 1/2 B. 1 C. 2 D. 1 1/2

D. 1 1/2

The physician prescribed 50 mg of a medication that is available as 80 mg per milliliter. How many milliliters would the nurse administer? A. 0.6 B. 16 C. 0.16 D. 1.6

A. 0.6

The physician ordered vancomycin hydrochloride 500 mg IVPB every 24 hours. The medication was placed in 100 mL of D5W to infuse over 60 minutes. What is the correct volume for infusion and rate for infusion on the infusion pump that has a microdrip tubing? A. Secondary volume: 100 mL; Secondary rate: 100 mL B. Secondary volume: 500 mL; Secondary rate: 10 gtt/mL C. Secondary volume: 100 mL; Secondary rate: 60 minutes D. Secondary volume: 500 mL; Secondary rate: 60 minutes

A. Secondary volume: 100 mL; Secondary rate: 100 mL

The physician ordered lidocaine 2 g in 500 mL of D5W. It is to infuse at 1 mg/minute per infusion pump. What is the correct IV flow rate in milliliters per hour? A. 5 B. 15 C. 10 D. 20

B. 15 This is a two-part problem. Begin by changing 1 mg/minute to 60 mg/hour (60 minutes = 1 hour) and 2 g to 2000 mg (1 g = 1000 mg). Estimate the amount to give. Formula Method: 60 mg/hour ÷ 2000 mg × 500 mL = 30,000/2000 = 15 mL/hour.

The physician ordered 2 mg of epinephrine in 250 mL of D5W. It is to infuse at 4 mcg/minute per infusion pump. What is the correct IV rate in milliliters per hour? Round to the nearest whole number. A. 29 B. 30 C. 31 D. 28

B. 30 For this problem, an equivalent is necessary. This is a multistep problem. First, reduce the numbers in the standard solution to milligrams per milliliter: 2 mg/250 mL = 0.008 mg/mL. Next, change milligrams to micrograms: 0.008 mg = 8 mcg/mL (1 mg = 1000 mcg). Divide by 60 to get micrograms per minute: 8 mcg/60 minutes = 0.133 mcg/minute. Estimate the amount to give. Formula Method: 4 mcg/minute ÷ 0.133 mcg/minute × 1 mL = 30.07 mL/hour; round to 30 mL/hour.

The physician ordered a unit of 250 mL packed red blood cells to infuse over 4 hours with a drop factor of 10 gtt/mL. Calculate the correct IV flow rate in milliliters per hour. Round off to the nearest whole number. A. 120 B. 63 C. 83 D. 42

B. 63 This IV order for packed red blood cells specifies the total amount of fluid to be infused and the duration of administration. To calculate milliliters per hour, simply divide the total volume (250 mL) by the number of hours (4 hours). Therefore, 250 mL/4 hours = 62.5 mL. Round off to the nearest whole number: 63 mL/hour.

The physician prescribed 7.5 mg of a medication that is available in 5-mg tablets. How many tablets would the nurse administer? A. 2 B. 1 C. 1 1/2 D. 1/2

C. 1 1/2

The physician ordered 500 mL NS to run over 6 hours with a drop factor of 20 gtt/mL. Calculate the correct IV flow rate to set on the infusion pump. A. 84 mL/hour B. 28 gtt/minute C. 83 mL/hour D. 27 gtt/minute

C. 83 mL/hour Infusion pumps are always calculated in milliliters per hour. Use this formula: Total number of milliliters ordered/Number of hours to run = mL/hour. Therefore, 500 mL/6 hours = 83.33 mL/hour. Round off to the nearest whole number: 83 mL/hour.

The physician ordered a client to receive 1000 mL D5 NS to infuse over 24 hours. Which solution should the nurse obtain from the supply cart? A. D5% 0.9 NS B. 0.9% NS C. D5% W D. D5% 0.45 NS

D. D5% 0.45 NS D5W = D5%W; D5 NS = D5% 0.9 NS; D5 NS = D5% 0.45 NS; NS = 0.9% NS. The 0.45% is considered because the NS solution is 0.9%.

The physician ordered aminophylline 250 mg in 500 mL of D5W. It is to infuse at 20 mg/hour per infusion pump. Calculate the correct IV flow rate in milliliters per hour. A. 40 B. 45 C. 30 D. 35

A. 40 Formula Method: 20 mg/250 mg × 500 mL = 10,000/250 = 40 mL/hour.

The physician ordered 1000 mL NS to infuse over 10 hours with a drop factor of 15 gtt/mL. Calculate the correct IV flow rate in drops per minute. Round off to the nearest whole number. A. 25 B. 150 C. 24 D. 100

A. 25 Use this formula: Number of milliliters to infuse × DF/Number of minutes to infuse = Drops per minute or gtt/minute. Therefore, 1000 mL × 15 gtt/mL ÷ 600 minutes (10 hours × 60 minutes) = 15,000/600 = 24.9 gtt/minute. Round off to the nearest whole number: 25 gtt/minute.

The physician ordered procainamide 2 g in 500 mL of D5W. It is to infuse at 0.24 g/hour per infusion pump. How many hours will the IV run? Round to the nearest hour. A. 8 B. 10 C. 9 D. 7

A. 8 First, calculate milliliters per hour, then calculate the hours by using this formula: Number of milliliters/Number of milliliters per hour = Hours. Estimate the amount to give. Formula Method: 0.24 g/hour ÷ 2 g × 500 mL = 120/2 = 60 mL/hour. Now calculate the number of hours: Number of milliliters/Number of milliliters per hour = Hours. Therefore, 500 mL ÷ 60 mL/hour = 8.3 hours. Round to the nearest hour: 8 hours.

The physician ordered dopamine 400 mg in 250 mL of D5W. It is to infuse at 100 mcg/minute per infusion pump. What is the correct IV rate in milliliters per hour? Round to the nearest whole number. A. 10 B. 4 C. 8 D. 6

B. 4 For this problem, an equivalent is necessary. This is a multistep problem. First, reduce the numbers in the standard solution to milligrams per milliliter: 400 mg/250 mL = 1.6 mg/mL. Next, change 1.6 mg to 1600 mcg. Divide by 60 minutes to get micrograms per minute: 1600 mcg/60 minutes = 26.67 mcg/minute. Estimate the amount to give. Round to the nearest whole number. Formula Method: 100 mcg/minute ÷ 26.67 mcg/minute × 1 mL = 3.749 mL/hour; round to 4 mL/hour.

The physician ordered 1000 mL D5W, IV, to run at 75 mL/hour. What is the correct volume for infusion and rate for infusion on the infusion pump? A. Rate for infusion: 1000 mL; Volume for infusion: 1000 mL B. Rate for infusion: 75 mL; Volume for infusion: 1000 mL C. Rate for infusion: 75 mL; Volume for infusion: 75 mL D. Rate for infusion: 1000 mL; Volume for infusion: 75 mL

B. Rate for infusion: 75 mL; Volume for infusion: 1000 mL

What information is missing from this IV label? 10:00 AM, Jane Doe, 1000 mL D5W at 100 mL/hour or 17 gtt/min, AB (initials). A. Date and time B. Date and client name C. Time, room, and bed number D. Date, room, and bed number

D

The physician prescribed 5000 units of a medication that is available in 10,000 units per milliliter. How many milliliters would the nurse administer? A. 1 mL B. 1.5 mL C. 2 mL D. 0.5 mL

D. 0.5 mL

A physician prescribed 35 mg of a medication, IM, q4h, prn. The drug is available as 50 mg/mL. How many milliliters would the nurse give for each dose? If the client received six doses over 24 hours, how many total milliliters would the nurse give? A. 0.8; 4.8 B. 0.6; 3.6 C. 0.5; 3 D. 0.7; 4.2

D. 0.7; 4.2 Proportion (Fractions): 1 mL/50 mg = x mL/35 mg; 50 x = 35/50 = 0.7 mL. To estimate the total milliliters given over 24 hours, multiply 0.7 mL by 6 doses (24 hours ÷ 4 hours) = 4.2 mL.

The physician ordered 1000 mL of D5W to infuse at 125 mL/hour with a drop factor of 10 gtt/mL. How many hours will this IV run? A. 6 B. 7 C. 9 D. 8

D. 8 This IV order specifies the total amount of fluid to be infused and the amount to be given per hour (milliliters per hour). To calculate the duration of infusion (number of hours), simply divide the total volume (1000 mL) by the volume per hour (125 mL). Therefore, 1000 mL ÷ 125 mL/hour = 8 hours to infuse.

Select the correct formula to use to identify the amount of drug in 1 mL of solution. A. Supply : Have :: 1 mL : Desire B. Supply/Have = 1 mL/Desire C. Amount of drug (mL)/Amount of fluid × Supply = 1 mL D. Amount of drug (mL)/Amount of fluid = Amount of drug in 1 mL

D. Amount of drug (mL)/Amount of fluid = Amount of drug in 1 mL

The physician ordered procainamide 2 g in 250 mL of D5W. It is to infuse at 0.24 g/hour per infusion pump. Calculate the correct IV flow rate in milliliters per hour A. 40 B. 35 C. 45 D. 30

D. 30 Formula Method: 0.24 g/hour ÷ 2 g × 250 mL = 60/2 = 30 mL/hour.

The physician ordered lidocaine 2 g in 500 mL of D5W. It is to infuse at 1 mg/minute per infusion pump. How many hours will the IV run? Round to the nearest hour. A. 32 B. 30 C. 31 D. 33

D. 33 For this problem, an equivalent is necessary. This is a multistep problem. First, calculate milliliters per hour, then calculate number of hours. Begin by changing 1 mg/minute to 60 mg/hour (60 minutes = 1 hour) and converting 2 g to 2000 mg (1 g = 1000 mg). Estimate the amount to give. Formula Method: 60 mg/hour ÷ 2000 mg × 500 mL = 30,000/2000 = 15 mL/hour. To calculate the number of hours, use this formula: Number of milliliters/Number of milliliters per hour = Hours. Therefore, 500 mL ÷ 15 mL/hour = 33.33 hours. Round to the nearest hour: 33 hours.

The physician ordered D5 NS to run at 125 mL/hour with a drop factor of 20 gtt/mL. Calculate the IV flow rate in gtt/minute. Round off to the nearest whole number. A. 41 B. 44 C. 43 D. 42

D. 42 Use this formula: Number of milliliters to infuse × DF/Number of minutes to infuse = Drops per minute or gtt/minute. Therefore, 125 mL × 20 gtt/mL ÷ 60 minutes = 2500/60 = 41.66 gtt/minute. Round off to the nearest whole number: 42 gtt/minute.

The physician ordered aminophylline 250 mg in 500 mL of D5W. It is to infuse at 30 mg/hour per infusion pump. How many hours will the IV run? Round to the nearest hour. A. 14 B. 8 C. 10 D. 12

B. 8 First, calculate milliliters per hour, then calculate the number of hours by using this formula: Number of milliliters/Number of milliliters per hour = Hours. Estimate the amount to give. Formula Method: 30 mg/250 mg × 500 mL = 15,000/250 = 60 mL/hour. Now calculate the number of hours. Number of milliliters/Number of milliliters per hour = Hours. Therefore, 500 mL/60 mL/hour = 8.3 hours. Round to the nearest hour: 8 hours.

A physician prescribed an IV solution, 500 mL of 0.9% NS with 25 g of an antibiotic, to run over 8 hours. What percentage of the IV fluids would be given each hour? A. 15 B. 10 C. 18.5 D. 12.5

D. 12.5 To estimate what percentage of the IV fluid is given each hour, first determine the amount of IV solution that would be given hourly: divide 500 mL by 8 hours which equals 62.5 mL/hour. Next, divide the hourly amount by the total amount: 62.5/500 = 0.125 mL/hour/500 mL. Change the decimal to a percentage by moving the decimal point two places to the right and then writing the percent sign. Therefore, 0.125 = 12.5%.