Chapter 52
Dosage Calculations
Multiple Choice Questions
1. | Which of the following is the basic unit to measure volume in the metric system?
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2. | Which of the following is the basic unit used to measure weight in the metric system?
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3. | Which of the following refers to the amount of space a drug occupies?
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4. | Which of the following is the metric equivalent to 0.001 liter?
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5. | Which of the following is an equivalent measure between the metric system and apothecary system?
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6. | Which of the following is an accurate comparison of an apothecary measurement and its equivalent within the apothecary system?
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7. | Which of the following is the apothecary equivalent to 30 mL?
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8. | What is the metric equivalent of 1000 mL?
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9. | The metric equivalent of 1 liter is ____.
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10. | The metric equivalent of 0.001 gram is ____.
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11. | Which of the following is the metric equivalent of 1 g?
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12. | What is the apothecary equivalent of 8 fl dr?
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13. | Which of the following is a correct equivalent within the household system? rev: 04_23_2014_QC_48612
B. | 30 milliliters = 1 fluid ounce |
D. | 1 milliliter = .001 liter |
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14. | In the household measurement system, 8 oz is equivalent to ____.
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15. | How many capsules will the patient take if the ordered dosage is 500 mg of ampicillin, and each capsule contains 250 mg?
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16. | How many capsules will the patient receive if the practitioner orders 30 mg of Adalat, and each capsule contains 10 mg?
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17. | If the licensed practitioner orders 120 mg of thyroid and each tablet contains 30 mg, how many tablets will the patient be given?
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18. | Which of the following is the apothecary equivalent to 30 mL in the metric system?
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19. | After receiving chemotherapy for lung cancer, Mr. Clark experiences severe nausea and vomiting. The licensed practitioner orders 5 mg Compazine IM. You have Compazine in a 10 mL multidose vial that provides the drug as 5 mg/mL. How many mL of Compazine will you administer to Mr. Clark?
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20. | Rosie is a 3-year-old child who has a confirmed bacterial pneumonia caused by Streptococcus pneumoniae. The physician orders Zinacef 50 mg/kg/day IM q6h. Rosie weighs 30 lb. How many milligrams of the medication will Rosie receive in one dose?
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21. | Mrs. Eckstein is in the office because her rheumatoid arthritis has been flaring up lately and she is in considerable pain. The physician asks you to administer a 20 mg IM injection of Depo-Medrol. The available medication is a 5 mL multidose vial that provides 40 mg/ mL. How much will you inject?
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22. | The physician ordered 30 mg/kg/day every 8 hours of this medication for an 8-year-old child who weighs 55 pounds. How much medicine will the child receive in one dose.
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23. | How much amoxicillin is in each 1 mL of this medicine?
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24. | The licensed practitioner orders 500 mg of amoxicillin three times daily for a patient. How much of the medication should the patient take at each dose?
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25. | When a meter is divided by 100, the result is ____.
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26. | If the basic metric unit is divided by _____, the resulting unit prefix is micro-.
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27. | To convert from kilograms to grams, move the decimal point ____.
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28. | Convert 45880 mL to liters.
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29. | Convert 78450 mg to grams.
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30. | Convert 8.09 L to milliliters.
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31. | The abbreviation for drop is ____.
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32. | The abbreviation for tablespoon is ____.
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33. | An equivalent measure for 5 mL is ____.
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34. | Equivalent measures for 8 fl oz are ____.
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35. | A patient drank 1 cup of coffee, 1/2 cup of juice, and three 8-oz glasses of water. What is the metric equivalent, in liters, of the total amount of fluids the patient drank?
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36. | The licensed practitioner orders 45 mL of a medication. How many tablespoons of the medication should be given?
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37. | The patient received a pint of medication from the pharmacy. This is equivalent to ____.
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38. | 32 ounces equals ____.
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39. | Bella weighs 110 lb. How many kilograms does she weigh?
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40. | Sam has a prescription for a medication that says to take 3 fl oz. He has a measuring spoon set and will use the tablespoon measure. How many tablespoons of medication will he need to take the prescribed dose?
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41. | Taylor's mother is supposed to give him 2 tablespoons of a medication. She only has a teaspoon measure available. How many teaspoons should she give him?
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42. | Body surface area (BSA) is stated in ____.
A. | milliliters per kilogram |
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43. | The licensed practitioner orders Depakene syrup 15 mg/kg/day divided into 2 doses per day for a child who weighs 33 lb. You have on hand Depakene syrup 250 mg/5 mL. How much syrup will you administer per dose?
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44. | How often should you check to see if the answers to dosage calculations are reasonable?
A. | The first time you perform a calculation for an unfamiliar medication |
B. | The first time you calculate a recurring dosage for a patient |
C. | Every time you perform a calculation for an unfamiliar patient |
D. | Every time you perform a calculation for an unfamiliar medication |
E. | Every time you perform a dosage calculation |
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45. | How much erythromycin is contained in each milliliter of the erythromycin ethylsuccinate according to the package label?
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46. | The physician has ordered erythromycin 40 mg/kg/day po q6h for a child who weighs 33 pounds. Refer to the label shown in the figure. How much will you administer per dose?
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47. | Convert 1560 mL to ounces.
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48. | Convert 10 oz to milliliters.
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49. | Convert 352 lb to kilograms.
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50. | Convert 70 kg to pounds.
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Fill in the Blank Questions
51. | The amount of space a drug occupies is its ________. ________________________________________ |
52. | The licensed practitioner orders 0.5 g of ampicillin. Dosage available is 250 mg capsules. The patient should receive ____ capsules for this order. ________________________________________ |
53. | The physician ordered gabapentin 2400 mg per day to be given every 6 hours. Dosage available is 600 mg tablets. The patient will take ________ tab(s) per dose. ________________________________________ |
54. | The licensed practitioner orders propranolol 1 mg/kg/day in four divided doses for a 9-year-old child weighing 70.4 pounds. Available is propranolol oral solution that provides 4 mg /mL. The child should receive ________ mL per dose. ________________________________________ |
55. | The licensed practitioner orders 500 mg ampicillin suspension four times daily. The dosage available is 250 mg per 5 mL. The patient will take ________ mL per dose. ________________________________________ |
56. | The licensed practitioner ordered 350 mg of a drug. You have 100 mg scored tablets on hand. You will have to give ________ tablets for this dose. ________________________________________ |
57. | The physician ordered Ceclor 0.374 g PO bid. Dosage available is an oral suspension of 187 mg per 5 mL. You will give ________ mL per dose. ________________________________________ |
58. | The doctor ordered enoxaparin 30 mg subcutaneously. Solution on hand is 300 mg/3 mL. You will administer ________ mL. ________________________________________ |
59. | The gram is the basic unit of ________ in the metric system. ________________________________________ |
60. | The basic unit of ________ in the metric system is the liter. ________________________________________ |
61. | The patient is supposed to take 5 mL of medication 4 times per day for 6 days. The pharmacist should dispense a total of ________ oz of medication to the patient. ________________________________________ |
62. | Last year, the patient weighed 190 kg. Ten months after surgery, the patient has lost 176 lb. The patient now weighs ________ kg. ________________________________________ |
63. | Carson's plan of care is to gain 2 lb each month for the next 4 months. He now weighs 40 kg. At the end of 4 months, Carson should weigh ________ pounds. ________________________________________ |
64. | The patient s ordered to take 3 tsp of medicine 3 times per day. The patient should take ________ mL per each dose of medication. ________________________________________ |
65. | Mrs. Adamson is to take 2 tablespoons of medication every 6 hours for 10 days. The pharmacy will have to dispense a total of ________ fluid ounces for this prescription. ________________________________________ |
66. | Max is to take 25 mL of a medication. However, he will be using a teaspoon at home. His dose will be ________ tsp. ________________________________________ |
67. | The set of scales used to determine body surface area is called a(n) ________. ________________________________________ |
68. | Whenever you perform a dosage calculation, you should think about your answer and determine if it is ________. ________________________________________ |
69. | The three systems of measurement used in the United States for pharmacology and drug administration are the metric, ________, and household systems. ________________________________________ |
70. | The method of dosage calculation in which you set up equivalent fractions and solve for the unknown amount is the ________ method. ________________________________________ |
71. | In the ________ method of dosage calculation, you use the basic equation D/H x Q to find the correct dose. ________________________________________ |
72. | When very precise medication dosages are required, complex calculations or a nomogram are used to calculate the patient's ________. ________________________________________ |
Multiple Choice Questions
73. | What is the term for two fractions that are equal to each other?
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Fill in the Blank Questions
74. | The only household measurements used for medications are units of ________. ________________________________________ |
75. | Two fractions that are equal to each other are called _________. ________________________________________ |