Dosage Calculations for Nurses Test Bank
Course Introduction
This course provides nursing students with essential knowledge and skills for accurately calculating medication dosages across various clinical settings. Emphasizing patient safety and best practices, the curriculum covers fundamental mathematical concepts, conversions between measurement systems, interpretation of medication orders, preparation of solutions, and calculations for oral, intravenous, and pediatric medications. Through practical exercises and real-world scenarios, students develop proficiency and confidence in determining correct dosages, minimizing errors, and ensuring effective patient care.
Recommended Textbook
Calculate with Confidence 6th Edition by Morris
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25 Chapters
590 Verified Questions
590 Flashcards
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Chapter 1: Roman Numerals
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11 Verified Questions
11 Flashcards
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Sample Questions
Q1) Perform the indicated operation and record the result in lowercase Roman numerals.
7 * 2 = _____ Answer: xiv
Q2) Write the following Arabic number as a lowercase Roman numeral.
18 = _____
Answer: xviii
Q3) Perform the indicated operation and record the result in lowercase Roman numerals.
6 * 3 = _____
Answer: xviii
Q4) Perform the indicated operation and record the result in lowercase Roman numerals.
30 - 6 = _____ Answer: xxiv
Q5) Perform the indicated operation and record the result in lowercase Roman numerals.
10 + 2 = _____ Answer: xii
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Chapter 2: Fractions
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42 Verified Questions
42 Flashcards
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Sample Questions
Q1) The nurse is instructed to give a client 2/3 of a cup of solution.If 1 cup = 240 milliliters (mL),how many mL should the nurse administer? _____
Answer: 160 mL
Q2) Arrange the following fractions from smallest to largest. 1/6,1/5,1/8,1/4,1/3: _______________
Answer: 1/8,1/6,1/5,1/4,1/3
Q3) Reduce the following fraction to lowest terms. 39/65 = _____
Answer: 3/5
Q4) Perform the indicated operation with fractions.Reduce to lowest terms as indicated. 1/5 + 1/2 + 1/4 = _____
Answer: 19/20
Q5) Reduce the following fraction to lowest terms. 54/81 = _____
Answer: 2/3
Q6) Perform the indicated operation and reduce to lowest terms. 1/12 + 6/12 + 5/12 = ____
Answer: 1
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Chapter 3: Decimals
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35 Verified Questions
35 Flashcards
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Sample Questions
Q1) One dose of vaccine is 1.25 mL.How much vaccine is needed to vaccinate 55 clients in a clinic? (Round answer to the nearest tenth. )_____
Answer: 68.8 mL
Q2) Perform the indicated operation with decimals.
64.1 - 0.009 = _____
Answer: 64.091
Q3) Indicate the largest number in the following set.
0.75,0.749: _____
Answer: 0.75
Q4) Round off the following decimal to the nearest thousandth.
0.6253 = _____
Answer: 0.625
Q5) Perform the indicated operation with decimals.
0.123 + 0.4 = _____
Answer: 0.523
Q6) The health care provider ordered 1.5 tablets of a medication to be given to a client four times a day for 21 days.How many tablets were prescribed? ______
Answer: 126 tablets
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Chapter 4: Ratio and Proportion
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25 Verified Questions
25 Flashcards
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Sample Questions
Q1) Solve for x.Round to the nearest tenth.
1:3.6 = x:170
x = _____
Q2) If 5oz of a solution contains 4 1/2 oz of water,how many oz of water are in 20 oz of solution? _______
Q3) A low-fat cheese has 40 calories (cal)per oz.A client eats 2 1/2 oz of the low-fat cheese.How many cal has the client eaten? _____
Q4) Solve for x.
2.2:1 = x:145
x = _____
Q5) A client must take four tabs per day for 14 days.How many tablets should the pharmacy supply to fill this order? ______
Q6) If 1 ounce (oz)is equal to 30 mL,how many mL are there in 4 3/4 oz? (State answer as a decimal number. )______
Q7) Solve for x in the following.
0.5/0.125 = x/4
x = _____
Q8) If three tablets (tabs)contain 60 mg,how many tabs would need to be given for 80 mg? ______
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Chapter 5: Percentages
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Sample Questions
Q1) Following exercise,a client's pulse rate increased from 80 to 95.What is the percent of increase in the client's pulse rate? (State answer to the nearest tenth. )
Q2) A client drank 3 ounces (oz)of a glass of apple juice.This was 75% of the full amount.What was the full amount of apple juice?
Q3) A client was able to drink 85% of a 1,000 milliliter (mL)bottle of an x-ray prep.How many mL did the client drink?
Q4) Convert 84.75% to decimal form.
Q5) Change the following percentage to a fraction.Reduce to lowest terms. 37.5% = _____
Q6) Convert 2.96 to a percent.
Q7) A client consumed 30% of a bowl of broth.The bowl held 360 mL.How many mL of the broth did the client consume?
Q8) Change the following percentage to a ratio and its decimal equivalent. 8% = _____;_____
Q9) A client is responsible for 30% of his doctor bills due to insurance.The client sees a specialist and the bill is $240.00.How much will the client be responsible for?
Q10) Convert 0.925 to a percent.
Page 7
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Chapter 6: Metric System
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Sample Questions
Q1) Complete the following sentence with the correct word(s). The units of the metric system are as follows: ____________________ (length),____________________ (volume),and ____________________ (weight).
Q2) Directions: Write the equivalent indicated. 873 mL = _________ L
Q3) Directions: Write the equivalent indicated. 1 mg = _____ g
Q4) Gram is the basic unit of weight in the metric system.
A)True
B)False
Q5) Directions: Write the equivalent indicated. 1 L = _____ mL
Q6) Six-tenths of a liter
A)0.6 L
B)6/10 L
C)0.60 L
D)0.60 l
Q7) Directions: Write the equivalent indicated. 450 mL = _____ L
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Chapter 7: Apothecary and Household Systems
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31 Verified Questions
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Sample Questions
Q1) Directions: Express the following value correctly.
20 MEQ
Q2) A capital "U" is an acceptable abbreviation for units.
A)True B)False
Q3) Directions: Write the equivalent indicated. 10 1/3 tbs = _______ mL
Q4) Directions: Write the equivalent indicated. 16 T = _____ mL
Q5) Directions: Write the equivalent indicated. 50 mL = _____ qt
Q6) Directions: Express the following value correctly.
17 U
Q7) Use of the apothecary system has been identified as a source of error in medication administration.
A)True B)False
Page 9
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Chapter 8: Converting Within and Between Systems
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Sample Questions
Q1) Directions: Write the equivalent indicated. 11 1/2 oz = ________ mL
Q2) Directions: Write the equivalent indicated.
4,176 g = _____ kg
Q3) Directions: Write the equivalent indicated. 2 oz = _____ tbs
Q4) Directions: Write the equivalent indicated. 0.3 mg = _____ g
Q5) A client has an order for Maalox 30 mL p.o.at bedtime.How many tsb will the nurse instruct the client to take? _____ tsb
Q6) Directions: Write the equivalent indicated. 2,575 mL = _______ L
Q7) Directions: Write the equivalent indicated. 4 1/4 qt = _____ mL
Q8) A client reports drinking 48 oz of water on a visit to the clinic.How many mL did the client drink? _________ mL
Q9) Directions: Write the equivalent indicated.
56 in = ______ cm
Page 10
Q10) Directions: Write the equivalent indicated.
45 kg = _______ lb
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Chapter 9: Additional Conversions Useful in the Health Care Setting
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Sample Questions
Q1) In international time,4:08 PM is:
A)0408 hours.
B)1508 hours.
C)1608 hours.
D)1708 hours.
Q2) Directions: Write the equivalent indicated.
16 oz = _____ lb
Q3) Directions: Convert the following temperature as indicated.
102S1U1P1\(\circ\)S1S1P0 F = _____ S1U1P1\(\circ\)S1S1P0 C
Q4) Directions: Convert the following weight as indicated.Round weight to the nearest tenth.
6.4 lb = _____ kg
Q5) Directions: Convert the following weight as indicated.Round weight to the nearest tenth.
82 1/2 lb = _____ kg
Q6) Directions: Convert as indicated.
27 cm = _____ in
Q8) A wound measures 4.2 cm in length.How many mm is this? _____ mm Page 12
Q7) Directions: Convert the following temperature as indicated. Store medication within a temperature range of 36° F and 41° F.______ ° C
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Chapter 10: Medication Administration
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Sample Questions
Q1) Directions: Complete the following sentence with the correct word or number. The use of posters and brochures to encourage clients to use strategies to avoid medication errors is called the _____________ .
Q2) A nurse who administers a medication that is unsafe is liable for the error.
A)True
B)False
Q3) Directions: For the following scenario,identify which of the "six rights" of medication administration has been violated.
A nurse charts medications that she administered at 10 AM on October 1st for 10 AM on October 2nd: _______________.
Q4) Medication errors can result in prolonged hospitalization for a client.
A)True B)False
Q5) Directions: Complete the following sentence with the correct word or number. Administration of medications within 30 minutes of the scheduled time is referred to as the _____________ .
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Chapter 11: Understanding and Interpreting Medication
Orders
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Sample Questions
Q1) A p.r.n.order must indicate the minimum time between dosages such as q4h.
A)True
B)False
Q2) The use of a computer to order medications:
A)increases client confidentiality.
B)lessens the work of checking orders.
C)helps to identify errors in writing orders.
D)decreases the problems associated with illegible handwriting.
Q3) Directions: Correct the following medication order using the ISMP list of Error-Prone Abbreviations,Symbols,and Dose Designations.
Heparin 5,000 units subcut daily
Q4) CPOE is an abbreviation for _______________.
Q5) Directions: Correct the following medication order using the ISMP list of Error-Prone Abbreviations,Symbols,and Dose Designations.
Timoptic 0.5% 1 gtt OS bid
Q6) Directions: Correct the following medication order using the ISMP list of Error-Prone Abbreviations,Symbols,and Dose Designations.
Lasix 40.0 mg po qd
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Chapter 12: Medication Administration Records and Medication Distribution Systems
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Sample Questions
Q1) Directions: Refer to the portion of the MAR provided below to answer the question.
Q2) Directions: Refer to the portion of the MAR provided below to answer the question.
Q3) Directions: Refer to the portion of the MAR provided below to answer the question.
Q4) A medicine ordered q6h would be given how many times a day? _____
Q5) Directions: Refer to the portion of the MAR provided below to answer the question.
Q6) A client refuses a p.o.medication and provides the nurse with a reason for refusing the medication.What should the nurse's action be?
A)Inform the client they cannot refuse a medication.
B)Report it to the nurse manager.
C)Administer the medication by an injectable route.
D)Document the refusal and inform the prescriber.
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Chapter 13: Reading Medication Labels
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Sample Questions
Q1) A medication label reads "Calan SR (verapamil hydrochloride)240 mg sustained release caplets." The form is:
A)caplets.
B)sustained-release caplets.
C)240 mg.
D)verapamil hydrochloride.
Q2) If a medication label reads "Ambien (zolpidem tartrate)5 mg tablets,Searle," the medication's generic name is:
A)Ambien.
B)Searle.
C)zolpidem tartrate.
D)tablets.
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Chapter 14: Dosage Calculation Using the Ratio and Proportion Method
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Sample Questions
Q1) Directions: Calculate the following dosage using the ratio and proportion method.Round mL answers to the nearest tenth unless otherwise indicated.
Order: Compazine 8 mg p.o.stat
Available: Compazine syrup labeled 5 mg per 5 mL
Q2) Directions: Calculate the following dosage using the ratio and proportion method.Round mL answers to the nearest tenth unless otherwise indicated.
Order: Raloxifene HCl 60 mg p.o. b.i.d.
Available: Raloxifene HCl tablets labeled 60 mg per tablet
Q3) Directions: Calculate the following dosage using the ratio and proportion method.Round mL answers to the nearest tenth unless otherwise indicated.
Order: Zofran 7 mg p.o. b.i.d.
Available: Zofran oral solution labeled 4 mg per 5 Ml
Q4) Directions: Calculate the following dosage using the ratio and proportion method.Round mL answers to the nearest tenth unless otherwise indicated.
Order: Calcijex 1.5 mcg IV daily on Mon. ,Wed. ,Fri.
Available: Calcijex 1 mcg per mL
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Page 18
Chapter 15: Dosage Calculation Using the Formula Method
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Sample Questions
Q1) Directions: Calculate the following dosage using the formula method.Round mL answers to the nearest tenth unless otherwise indicated.
Order: Thorazine 15 mg IM stat
Available: Thorazine 25 mg per mL
Q2) Directions: Calculate the following dosage using the formula method.Round mL answers to the nearest tenth unless otherwise indicated.
Order: Thorazine 25 mg p.o.t.i.d.
Available: Thorazine syrup labeled 10 mg per 5 mL
Q3) Directions: Calculate the following dosage using the formula method.Round mL answers to the nearest tenth unless otherwise indicated.
Order: Zofran 7 mg p.o. b.i.d.
Available: Zofran oral solution labeled 4 mg per 5 mL
Q4) Directions: Calculate the following dosage using the formula method.Round mL answers to the nearest tenth unless otherwise indicated.
Order: Compazine 8 mg p.o.stat
Available: Compazine syrup labeled 5 mg per 5 mL
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Chapter 16: Dosage Calculation Using the Dimensional Analysis Method
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Sample Questions
Q1) Directions: Calculate the following dosage using the dimensional analysis method.Round mL answers to the nearest tenth unless otherwise indicated
Order: Amoxil 0.5 g p.o.q6h
Available: Amoxil capsules labeled 250 mg per capsule
Q2) Directions: Calculate the following dosage using the dimensional analysis method.Round mL answers to the nearest tenth unless otherwise indicated
Order: Ampicillin 0.375 g IM q6h
Available: Ampicillin 250 mg per mL
Q3) Directions: Calculate the following dosage using the dimensional analysis method.Round mL answers to the nearest tenth unless otherwise indicated
Order: Calcijex 1.5 mcg IV daily on Mon. ,Wed. ,Fri.
Available: Calcijex 1 mcg per mL
Q4) Directions: Calculate the following dosage using the dimensional analysis method.Round mL answers to the nearest tenth unless otherwise indicated
Order: Thorazine 15 mg IM stat
Available: Thorazine 25 mg per mL
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Page 20
Chapter 17: Oral Medications
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Sample Questions
Q1) Directions: Complete with the correct word(s)or number. The most common form of oral medication is the __________.
Q2) Directions: Complete with the correct word(s)or number.
The nurse should question and check any calculation that indicates you should administer more than ________ tablets or capsules to achieve a single dose.
Q3) Directions: Calculate the following dosage.Use labels where provided.Round oral liquids to the nearest tenth as indicated.
Order: Ampicillin 1 g p.o.as an initial dosage and then 500 mg p.o.q.i.d.for 7 days thereafter
Available: Ampicillin capsules labeled 500 mg
a.How many capsules will you administer for the initial dosage? _____ cap(s)
b.What is the total number of capsules needed for the subsequent dosages for 7 days? _____ cap(s)
Q4) Directions: Complete with the correct word(s)or number.
Sublingual tablets must never be _______________ but placed _______________ the tongue.
Q5) Directions: Complete with the correct word(s)or number.
Enteric-coated tablets and time-release tablets should never be _______________.
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Chapter 18: Parenteral Medications
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Sample Questions
Q1) Directions: Calculate the dosages,use labels where provided,and shade in the dosages on the syringe where provided.Round answers to the nearest tenth unless otherwise indicated.
Order: Levothyroxine sodium 0.3 mg IV daily
Available: Levothyroxine sodium 200 mcg per 5 mL How many milliliters will you add to the IV? _____ mL
Q2) Directions: Complete the following statements with the correct word(s)or number(s). The route that is used for diagnostic purposes is called _______________.
Q3) Directions: Complete the following statements with the correct word(s)or number(s). The term used for injectable medications is _______________.
Q4) Directions: Complete the following statements with the correct word(s)or number(s). If a nurse calculates a dosage of 3.39 mL of medication,which size syringe should the nurse select? _____ What would be the nearest measurable dose on the syringe?
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Chapter 19: Reconstitution of Solutions
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Sample Questions
Q1) Directions: Indicate how you would prepare each of the following using full-strength hydrogen peroxide (solute)and normal saline (solvent).
0.24 L of 1/3 strength for wound care
Q2) Directions: Indicate how you would prepare each of the following using full-strength hydrogen peroxide (solute)and normal saline (solvent).
300 mL of 3/4 strength for skeletal pin care
Q3) Directions: Indicate how you would prepare each of the following using full-strength hydrogen peroxide (solute)and normal saline (solvent).
8 oz of 1/2 strength for wound care.
Q4) Directions: Prepare the following strength solutions.Describe your calculations. Prepare irrigant 250 mL 1/2 strength solution: ______________________________
Q5) Directions: Prepare the following strength solutions.Describe your calculations. 360 mL of 1/4 strength Ensure percutaneous endoscopic (PEG)tube over 4 hours
Q6) Directions: Prepare the following strength solutions.Describe your calculations. 1/4 strength Ensure 8 oz p.o.q4h for 24 hours
Q7) Directions: Prepare the following strength solutions.Describe your calculations. 800 mL of 3/4 strength Sustacal via gastrostomy over 6 hours
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Chapter 20: Insulin
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Sample Questions
Q1) Directions: Fill in the correct number or word(s). What is the difference between the calibration of units on the 1-mL insulin syringe and on the Lo-Dose syringe? ______________________________
Q2) Directions: Fill in the correct number or word(s). U-100 on the label of an insulin vial means: ______________________________.
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Chapter 21: Intravenous Solutions and Equipment
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Sample Questions
Q1) Directions: Fill in the correct number or word(s)to answer the question. An IV pump is an example of an ___________ infusion device.
Q2) Directions: Calculate the number of grams of NaCl and /or dextrose in the following solutions.
500 mL 1/2 NS sodium chloride (NaCl): _____
Q3) Directions: Calculate the number of grams of NaCl and /or dextrose in the following solutions.
0.5 L D51/4NS ________ g dextrose ________ g NaCl
Q4) Directions: Fill in the correct number or word(s)to answer the question. _______________ devices allow a client to self-administer pain medication.
Q5) Directions: Fill in the correct number or word(s)to answer the question. The IV line that can be used to administer medications and solutions and can be connected to a port on the main infusion is called _______________.
Q6) Directions: Interpret the following IV orders.
1,000 mL (1 L)D5W to infuse at a rate of 100 mL per hour
Q7) Directions: Calculate the number of grams of NaCl and /or dextrose in the following solutions.
250 mL D5NS _______ g dextrose ________ g NaCl
Page 25
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Chapter 22: Intravenous Calculations
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Sample Questions
Q1) Directions: Recalculate the IV flow rate.Determine the percentage of change and state the course of action.Assume that hospital policy permits recalculation of rates when rates are off schedule and clients are stable.
250 mL were to infuse in 8 hours at 31 microgtt/min. The drop factor is 60 gtt/mL.After 4 hours,you notice that 100 mL have infused.
a.Recalculated rate: _____
b.Percentage of change: _____
c.Course of action: _____
Q2) Directions: Determine the flow rate for the following IV being administered by infusion pump.
Clindamycin 600 mg in 100 mL D5W over 1 1/2 hours: _____
Q3) Directions: Determine the following in drops per minute using the drop factor provided.
An IV of 1,000 mL 0.9 % NS is infusing at 18 macrogtt/min.The drop factor is 15 gtt/mL.How long will it take for the IV to infuse? (Express time in hours and minutes. ): _____
Q4) Directions: Determine the flow rate for the following IV being administered by infusion pump.
500 mL of Intralipid in 6 hours: _____
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Chapter 23: Heparin Calculations
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Sample Questions
Q1) Directions: Calculate the following hourly dosage of heparin (units/hr). If a U for units was misread as a zero by the nurse for a heparin dose,the consequences to the client receiving the heparin could be ____________________________.
Q2) Directions: Calculate the following hourly dosage of heparin (units/hr). Which solution of heparin is more concentrated: 1,000 units per mL or 10,000 units per mL? _____
Q3) Directions: Calculate the following hourly dosage of heparin (units/hr).
Order: 50,000 units of heparin in 1 L D5 0.9% NS to infuse at 40 mL/hr units/hr = _____
Q4) Directions: Calculate the following hourly dosage of heparin (units/hr).
A client weighs 70 kg.Heparin infusion: Heparin 25,000 units in 1,000 mL 0.9 % sodium chloride.
Order: Bolus with heparin sodium at 90 units/kg,then initiate drip at 20 units/kg/hr.
a.Calculate the heparin bolus dosage: _____
b.Calculate the infusion rate for the IV dosage: _____
c.Determine the rate in mL/hr at which to set the infusion device: _____
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Page 27
Chapter 24: Critical Care Calculations
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Sample Questions
Q1) Directions: Calculate the dosages as indicated. A client weighing 80 kg has an order for Intropin to infuse at 8 mcg/kg/min.The solution available is 800 mg Intropin in 500 mL D5W.
a.mcg/min: _____
b.mL/hr: _____
Q2) Directions: Calculate the dosages as indicated.
A client is receiving dopamine 800 mg in 500 mL D5W infusing at a rate of 30 mL/hr.
a.mg/hr: _____
b.mcg/min: _____
Q3) Directions: Calculate the dosages as indicated.
Dopamine 4 mcg/kg/min is ordered for a client who weighs 165 lb.The solution available is 400 mg of Dopamine in 250 mL D5W.To infuse by infusion pump that delivers in tenths of a milliliter.
a.mg/min: ____
b.mg/hr: _____
c.mL/hr: ____
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Chapter 25: Pediatric and Adult Dosage Calculation Based on Weight
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Sample Questions
Q1) Directions: Determine the normal dosage range to the nearest tenth.State your course of action.
A child weighs 10 kg and is to receive 0.5 g of nafcillin in 100 mL D5W q6h.The dosage range is 100 to 200 mg/kg/day.What is your course of action?
Q2) Directions: Using the West nomogram,determine the body surface area (BSA)for a child with the height and weight given. 80 cm and 11 kg: _____ m<sup>2</sup>
Q3) Directions: Determine the normal dosage range to the nearest tenth.State your course of action.
An IV medication of 50 mcg in 200 mL is ordered to infuse over 2 hours.The normal dosage range is 1.5 to 3 mcg/kg/hr.The child weighs 5.7 kg.Determine the dosage range per hour.Determine whether the dosage ordered is within normal limits.State your course of action: ______________________________
Q4) Directions: Use the appropriate formula to determine BSA.Express answer to the nearest hundredth.
A child who measures 26 inches and weighs 36 lb: _____ m<sup>2</sup>
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