TEST BANK
Henke's Med-Math: Dosage Calculation, Preparation, & Administration
Susan Buchholz
9th Edition Table of Contents
Chapter 01 Arithmetic Needed for Dosage 1
Chapter 02 Metric and Household Systems of Measurement 15
Chapter 03 Drug Abbreviations, Labels, and Packaging 28
Chapter 04 Calculation of Oral Medications-Solids and Liquids 41
Chapter 05 Liquids for Injection 57
Chapter 06 Calculation of Basic IV Drip Rates 71
Chapter 07 Special Types of IV Calculations 84
Chapter 08 Dosage Problems for Infants and Children 100
Chapter 09 Information Basic to Administering Drugs 113
Chapter 10 Administration Procedures 127 WWW.TBSM.WSChapter 1: Arithmetic Needed for Dosage MULTIPLE CHOICE 1. A patient/client was instructed to drink 25 oz of water within 2 hours but was only able to drink 15 oz. What portion of the water remained? a. 2/5 b. 3/5 c. 2/25 d. 25/25 ANS: A Feedback: Subtract the quantity of water the client drank (15 oz) from the total available quantity (2 5 oz): 10 oz remain. To determine the portion of the water that remains, create a fraction by dividing 1 0 oz (remaining portion) by 25 oz (total portion). Th erefore, 10 divided by 25 = 10/25. To reduce fractions, find the largest number that can be divi ded evenly into the numerator and the denominator (5). Ten divided by 5 (10/5) = 2; 25/5 = 5. The fra ction 10/25 can be reduced to its lowest terms of 2 /5. Format: Multiple Choice Chapter: 1 Client Needs: Physiological Integrity: Basic Care a nd Comfort Cognitive Level: Apply Difficulty: Moderate Page and Header: 2, Dividing Whole Numbers; 3, Frac tions Integrated Process: Teaching/Learning Objective: 1, 2 2. A patient/client was prescribed 240 mL of Ensur e by mouth as a supplement but consumed only 100 mL. What portion of the Ensure remained? a. 5/12 b. 7/12 c. 100/240 d. 240/240 ANS: B Feedback: Subtract the quantity of Ensure the clien t consumed (100 mL) from the total available quantity (240 mL): 140 mL remain. To determine the portion of the Ensure that remains, create a fraction by dividing 140 mL (remaining portion) by 240 mL (total portion). Therefore, 140 divided by 240 = 7/12. To reduce fractions, find the largest n umber that can be divided evenly into the numerator and the denominator (20); 140 divided by 20 (140/20 ) = 7; 240/20 = 12. The fraction 140/240 can be reduced to its lowest terms of 7/12. Format: Multiple Choice Chapter: 1 Client Needs: Physiological Integrity: Basic Care a nd Comfort Cognitive Level: Apply Difficulty: Moderate Page and Header: 2, Dividing Whole Numbers; 3, Frac tions Integrated Process: Teaching/Learning Objective: 1, 2 ______________________________________________________________________________________________
______________________________________________________________________________________________Test Bank - Henke's Med-Math Dosage: Calculation, Preparation, and Administration, 9th Edition (Buchholz, 2020)
1 | P a g e WWW.TBSM.WS 3. A patient/client consumed oz. of coffee, 2/3 oz. of ice cream, and oz. of beef broth. What is the total number of ounces consumed that should be documented for the patient/client? a. 3 3/4 b. 4 5/12 c. 4 2/3 d. 4 4/9 ANS: B Feedback: Add the amount of ounces consumed. First, change any mixed number to a fraction by multiplying the whole number by the denominator and then adding that total to the numerator. For the coffee, 4 2 = 8 + 1 = 9/4; for the beef broth, 2 1 = 2 + 1 = 3/2. Then add: 9/4 + 2/3 (ice cream) + 3/ 2. When fractions have different denominators, find the least common denominator (LCD). For 2, 3, and 4 , the LCD = 12. Rewrite each fraction using the LCD; divide the LCD by the denominator of each fraction and then multiply that result by the numerator of the fracti on. The new fractions to be added are 27/12 (coffee ), 8/12 (ice cream), and 18/12 (beef broth). After con version of the fractions, the numerators are added together and the fraction is reduced to the lowest terms. Format: Multiple Choice Chapter: 1 Client Needs: Physiological Integrity: Basic Care a nd Comfort Cognitive Level: Analyze Difficulty: Difficult Page and Header: 2, Multiplying Whole Numbers; 3, F ractions Integrated Process: Communication and Documentation Objective: 1, 2 4. A coffee cup holds 180 mL. The patient/client d rank 2? cups of coffee. How many milliliters would the nurse document as consumed? a. 360 b. 420 c. 510 d. 600 ANS: B Feedback: The coffee cup holds 180 mL. The client d rank 2? cups. To estimate the total number of milliliters consumed, multiply 180 7/3 ( ). When a mixed number is present, change it to an improper fraction by multiplying the whole number b y the denominator and then adding that total to the numerator: 2 3 = 6 + 1 = 7/3. Therefore, 180 mL × 7/3 = 420 mL (180 ÷ 3 = 60 × 7 = 420). Format: Multiple Choice Chapter: 1 Client Needs: Physiological Integrity: Basic Care a nd Comfort Cognitive Level: Analyze Difficulty: Difficult Page and Header: 2, Multiplying Whole Numbers; 3, F ractions Integrated Process: Communication and Documentation Objective: 1, 2 5. A patient/client weighed 48.52 kg on admission and now weighs 50.4 kg. How many kilograms were gained since admission? a. 0.78 b. 0.88 ______________________________________________________________________________________________
______________________________________________________________________________________________Test Bank - Henke's Med-Math Dosage: Calculation, Preparation, and Administration, 9th Edition (Buchholz, 2020)
2 | P a g e WWW.TBSM.WSc. 1.88 d. 1.98 ANS: C Feedback: To estimate the amount of kilograms gaine d, subtract weight on admission (48.52) from current weight (50.4 kg) = 1.88 kg (weight gained). To subtract decimals, decimals are stacked lined up. Starting at the far right of the stack, the num bers are subtracted. In the answer, make sure the decimal point lines up exactly with the points abov e it. Format: Multiple Choice Chapter: 1 Client Needs: Physiological Integrity: Physiologica l Adaptation Cognitive Level: Apply Difficulty: Moderate Page and Header: 10, Decimals Integrated Process: Nursing Process Objective: 3, 5 6. A patient/client's sodium intake for one meal w as 0.004 g and 0.152 g. How many grams, to the nearest hundredths, of sodium were consumed? a. 0.15 b. 0.156 c. 0.16 d. 0.166 ANS: C Feedback: To add decimals, stack vertically, making sure that all of the decimal points exactly line u p. Starting at the far right of the stack, add each ve rtical column of numbers. In the answer, make sure the decimal point lines up exactly with the points abov e it. To round off a decimal, the final number is dropped. Add 0.004 g + 0.152 g = 0.156 g (thousandt hs place) to determine the total number of grams the client consumed. When the final number (6) is 5 or greater, drop that number and increase the adjacent number (5) by 1. When you want a number ro unded off to the nearest hundredth, look at the number in the thousandth place and follow the round ing off rule. Therefore, 0.156 = 0.16 g. Format: Multiple Choice Chapter: 1 Client Needs: Physiological Integrity: Physiologica l Adaptation Cognitive Level: Apply Difficulty: Moderate Page and Header: 10, Decimals Integrated Process: Teaching/Learning Objective: 3, 5, 6 7. A patient/client reports drinking 30% of a 16-o z bottle of orange juice. How many ounces did the patient/client drink? a. 0.18 b. 3.2 c. 4.8 d. 5.3 ANS: C ______________________________________________________________________________________________
______________________________________________________________________________________________Test Bank - Henke's Med-Math Dosage: Calculation, Preparation, and Administration, 9th Edition (Buchholz, 2020)
3 | P a g e WWW.TBSM.WSFeedback: Percent means "parts per hundred." Percen t is a fraction, containing a variable numerator and a denominator that always equals 100. Therefore , 30% = 30/100 (fraction), 30:100 (ratio), and 0.3 (decimal). To determine the percent of the orange j uice the client drank, multiply 30% 16 oz. Using the decimal format (0.3 16), line up the numbers on the right. Do not alig n the decimal points. Starting at the right, multiply each digit in the t op number by each digit in the bottom number, just as is done with whole numbers. Add the products. Place the decimal point in the answer by starting at the right and moving the point the same number of place s that you totaled earlier. When blank spaces are present, fill each one with a zero. The answer is 4 .8 oz (0.3 16). Format: Multiple Choice Chapter: 1 Client Needs: Physiological Integrity: Physiologica l Adaptation Cognitive Level: Apply Difficulty: Moderate Page and Header: 10, Decimals; 15, Percents; 19, Fr actions, Ratio, and Proportion. Integrated Process: Teaching/Learning Objective: 5, 7, 8 8. A patient/client reports drinking 45% of a 12-o z can of soda. How many ounces are documented? a. 4.4 b. 5.7 c. 5.4 d. 4.7 ANS: C Feedback: Percent means "parts per hundred." Percen t is a fraction, containing a variable numerator and a denominator that always equals 100. Therefore , 30% = 30/100 (fraction), 30:100 (ratio), and 0.3 (decimal). To determine the percent of the orange j uice the client drank, multiply 30% 16 oz. Using the decimal format (0.3 16), line up the numbers on the right. Do not alig n the decimal points. Starting at the right, multiply each digit in the t op number by each digit in the bottom number, just as is done with whole numbers. Add the products. Place the decimal point in the answer by starting at the right and moving the point the same number of place s that you totaled earlier. When blank spaces are present, fill each one with a zero. The answer is 4 .8 oz (0.3 16). Format: Multiple Choice Chapter: 1 Client Needs: Physiological Integrity: Physiologica l Adaptation Cognitive Level: Apply Difficulty: Moderate Page and Header: 10, Decimals; 15, Percents; 19, Fr actions, Ratio, and Proportion. Integrated Process: Communication and Documentation Objective: 5, 7, 8 9. A patient/client is on a 1200 mL fluid restrict ion for 24 hours. At breakfast and lunch, the patie nt/client consumed 3/5 of the fluid allowance. How many milli liters were consumed? a. 280 b. 360 c. 540 d. 720 ANS: D Feedback: To estimate 3/5 of 1200 mL, set up the fr action: 3/5 × 1200/1 = 3600/5 = 720 mL. Multiply the numerators across and then multiply the denomin ators across. Reduce the answer to its lowest terms. ______________________________________________________________________________________________
______________________________________________________________________________________________Test Bank - Henke's Med-Math Dosage: Calculation, Preparation, and Administration, 9th Edition (Buchholz, 2020)
4 | P a g e WWW.TBSM.WS Format: Multiple Choice Chapter: 1 Client Needs: Physiological Integrity: Physiologica l Adaptation Cognitive Level: Apply Difficulty: Moderate Page and Header: 3, Fractions Integrated Process: Teaching/Learning Objective: 1 10. A patient/client is on a 1500 mL fluid restric tion for 24 hours. At 3 PM, the client consumed 2/3 of the fluid allowance for 24 hours. What are the maximum milliliters of fluid remaining that the patient/client can consume during the evening shift ? a. 400 b. 450 c. 500 d. 550 ANS: C Feedback: To estimate 2/3 of 1500 mL, multiply 2/3 × 1500. Set up the fraction: 2/3 1500/1 = 3000/3 = 1000 mL (amount of fluid consumed in milli liters). Multiply the fraction by multiplying the numerators across and then multiplying denominators across. Reduce the answer to its lowest terms. To determine the amount of fluid left to be consume d, subtract 1000 (amount of fluid consumed) from 1500 mL (total amount of fluid for 24 hours), which equals 500 mL (maximum fluid to be administered during evening shift). Format: Multiple Choice Chapter: 1 Client Needs: Physiological Integrity: Reduction of Risk Potential Cognitive Level: Analyze Difficulty: Difficult Page and Header: 3, Fractions Integrated Process: Communication and Documentation Objective: 1 11. A patient/client drank 0.375 mL of a medicatio n that was available as 0.75 mL. List the amount of medication consumed as a fraction of the whole. a. 1/5 b. 1/4 c. 1/3 d. 1/2 ANS: D Feedback: The patient/client consumed 0.375 mL of 0 .75 mL of a medication. To estimate the amount consumed, as a fraction of the whole, set up the pr oblem as division: 0.375/0.750. Clear the decimal points in both the numerator and the denominator by moving each decimal point three places to the right. Therefore, 375/750 = 0.5 (or 1/2). Format: Multiple Choice Chapter: 1 Client Needs: Physiological Integrity: Pharmacologi cal and Parenteral Therapies Cognitive Level: Apply Difficulty: Moderate Page and Header: 3, Fractions; 10, Decimals ______________________________________________________________________________________________
______________________________________________________________________________________________Test Bank - Henke's Med-Math Dosage: Calculation, Preparation, and Administration, 9th Edition (Buchholz, 2020)
5 | P a g e WWW.TBSM.WSIntegrated Process: Teaching/Learning Objective: 1, 5 12. A laboratory report listed the following four results: bilirubin (0.2), creatinine (1.46), creati nine (0.09), and albumin (0.75). Identify the smallest amount. a. 0.2 b. 1.46 c. 0.09 d. 0.75 ANS: C Feedback: The correct order from smallest to larges t is 0.09, 0.2, 0.75, and 1.46. Size is determined by the number of places that come after the decimal po int. One place is “tenths,” two places is “hundredths,” and three places is “thousandths.” Th erefore, 0.09, read as nine hundredths, is smaller than two tenths, seventy-five hundredths, and one a nd forty-six hundredths. Format: Multiple Choice Chapter: 1 Client Needs: Physiological Integrity: Physiologica l Adaptation Cognitive Level: Apply Difficulty: Moderate Page and Header: 10, Decimals Integrated Process: Teaching/Learning Objective: 3 13. The laboratory report included these four numb ers: 0.355, 0.3, 0.03, and 0.035. Which decimal is the largest? a. 0.3 b. 0.03 c. 0.035 d. 0.355 ANS: A Feedback: The correct sequence from smallest to lar gest is 0.355, 0.035, 0.03, and 0.3. Size is determined by the number of places that come after the decimal point. One place is “tenths,” two places is “hundredths,” and three places is “thousa ndths.” Therefore, three tenths is larger than thre e hundredths, thirty-five thousandths, and three hund red and fifty-five thousandths. Format: Multiple Choice Chapter: 1 Client Needs: Physiological Integrity: Physiologica l Adaptation Cognitive Level: Apply Difficulty: Moderate Page and Header: 10, Decimals Integrated Process: Teaching/Learning Objective: 3 14. A patient/client's oral ibuprofen suspension d ose contains 325 mg per teaspoon. A dose of 100 mg represents what percentage of this dosage? a. 29.7 b. 30.8 c. 31.7 d. 32.8 ANS: B ______________________________________________________________________________________________
______________________________________________________________________________________________Test Bank - Henke's Med-Math Dosage: Calculation, Preparation, and Administration, 9th Edition (Buchholz, 2020)
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