chapter 13: answers to practice questions - cengage 1e clinical dosage calculations for australia...
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Brotto 1e Clinical Dosage Calculations for Australia and NZ – Solutions Manual
Chapter 13 © 2012 Cengage Australia Pty Ltd 1
Chapter 13: Answers to practice questions
Page 227
General mathematics:
1. 19 2. 74 3. 492 4. 1113 5. 488 6. 389 7. 87 8. 2634 9. 4824 10. 45 11. 498 12. 648 13. 1598 × 18 = 28 764 14. 4852 × 45 = 218 340 15. 9889 × 72 = 712 008 16. 9 17. 24 18. 55 19. 63 20. 93
Fractions – simplify the following:
21. 8 124 3
=
22. 25 11000 40
=
23. 13 139 3
=
24. 2 113 138 4=
Brotto 1e Clinical Dosage Calculations for Australia and NZ – Solutions Manual
Chapter 13 © 2012 Cengage Australia Pty Ltd 2
25. 22 114 430 15
=
26. 27 255 5=
27. 19 328 8=
28. 23 536 6=
29. 125 1125
=
30. 23 5118 18
=
31. 1 3 3 16 23 138 46× = =
32. 17 5 8523 9 207
× =
33. 7 1 725 2 50
× =
34. 1 2 23 9 27× =
35. 2 7 1 7 75 22 5 11 55× = × =
36. 2 19 2 23 463 23 3 19 57÷ = × =
37. 1 9 1 11 112 11 2 9 18÷ = × =
38. 3 2 3 5 1511 5 11 2 22
÷ = × =
39. 7 1 7 2 1425 2 25 1 25
÷ = × =
40. 13 3 13 4 52 2622 4 22 3 66 33
÷ = × = =
Brotto 1e Clinical Dosage Calculations for Australia and NZ – Solutions Manual
Chapter 13 © 2012 Cengage Australia Pty Ltd 3
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Convert the following fractions to decimals:
41. 0.86 42. 0.88 43. 0.26 44. 0.61 45. 0.35
Decimals:
46. 0.158
47. 0.098
48. 0.096
49. 5.746
50. 5.281
51. 82.82
52. 0.29
53. 8.31
54. 60.32
55. 4.87
56. 6198.3
57. 3054.87
58. 5568.42
59. 1396.55
60. 768.96
61. 1.70
62. 0.14
63. 0.14
64. 1.90
65. 18
Brotto 1e Clinical Dosage Calculations for Australia and NZ – Solutions Manual
Chapter 13 © 2012 Cengage Australia Pty Ltd 4
Conversion:
a) 0.475 g
b) 2.5 L
c) 0.125mg
d) 0.5g
e) 35,000mg
f) 750,000mcg
General questions:
1. 6.3 mL 2. 8.3 mL 3. 4.2 mL 4. 3.1 mL 5. 6 mL 6. 1.5 mL 7. 2.4 mL 8. 2.5 mL 9. 0.5 mL 10. 8.32 mL 11. 20.8 mL 12. 2.5 mL 13. 0.6 mL 14. 1.25 mL 15. 15 mL 16. 3 suppositories 17. 3 tablets 18. 4 tablets 19. 32.5 mL 20. 7.5 mL 21. 0.93 mL 22. 1.2 units 23. 50 mL 24. a. 2.5 tablets b. 7.5 tablets 25. ¾ tablet 26. 12.5 mL 27. 1.2 mL 28. 3 mane, 3 lunch, 2 nocte 29. 0.5 tablets 30. 1.5 tablets
Brotto 1e Clinical Dosage Calculations for Australia and NZ – Solutions Manual
Chapter 13 © 2012 Cengage Australia Pty Ltd 5
31. 3.5 mL 32. 6 tablets 33. 30 mL 34. 25 mL/hr 35. 1000 units/hr 36. 80mg/hr 37. 20mL/hr 38. 60mL/hr38, which
39.
Formula method
Calculate rate in mL/min
0.2 mL/min Calculate rate in mL/hr
12 mL per hour Milronine infusion
Ratio method
Calculate rate in mL/min 𝓍 = 0.2 mL/min Calculate rate in mL/hr
𝓍 = 12 mL hr⁄ rate gives 40 mcg min⁄ , which is the equivalent of 0.5 mcg kg⁄ /min for this 80 kg patient
40.
Formula method
Calculate rate in mL/min
0.05 mL/min Calculate rate in mL/hr
3 mL per hour GTN infusion
Ratio method
Calculate rate in mL/min 𝓍 = 0.05 mL/min Calculate rate in mL/hr
𝓍 = 3 mL hr⁄ rate gives 5 mcg min⁄
41.
a. Total dose
Dose 1: 180 mcg
Brotto 1e Clinical Dosage Calculations for Australia and NZ – Solutions Manual
Chapter 13 © 2012 Cengage Australia Pty Ltd 6
Dose 2: 90 mcg
Dose 3: 90 mcg
To calculate total dose, simply add the three doses together:
360 mcg Digoxin
b. Initial loading dose (from part a) is 180 mcg
Formula method
3.6mL Digoxin mixture for loading dose
Ratio method
𝓍 = 3.6 mL Digoxin mixture for loading dose Calculate rate in mL/hr
𝓍 = 3 mL hr⁄ rate gives 5 mcg min⁄ c. Amount to be administered for doses 2 and 3, i.e. 90 mcg
Formula method
1.8 mL Digoxin mixture for doses 2 and 3 (each, not combined)
Ratio method
𝓍 = 1.8 mL Digoxin
42.
0.48 mg per dose 43.
86.9 kg
44.
14.58 mL/min
45.
a. 398
b. 212
46.
a. 11000
b. 1500
47.
Brotto 1e Clinical Dosage Calculations for Australia and NZ – Solutions Manual
Chapter 13 © 2012 Cengage Australia Pty Ltd 7
a. 77%
b. 85%
48.
a. 75%
b. 20%
49.
a. 320
b. 1150
50.
1.6 mg in 1 mL or 1.6 mg/mL
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51.
0.5 units in 1 mL or 0.5 units/mL
52.
a.
Formula method
55.5 or 56 drops per minute
Ratio method
𝓍 = 55.5 or 56 drops per minute b.
Formula method
166.67 mL per hour or 167 mL per hour (rounded up)
Ratio method
𝓍 = 166.67 mL hr or 167 mL hr⁄⁄ (rounded up)
53.
a
Formula method
41.66 or 42 drops per minute
Brotto 1e Clinical Dosage Calculations for Australia and NZ – Solutions Manual
Chapter 13 © 2012 Cengage Australia Pty Ltd 8
Ratio method
𝓍 = 41.66 or 42 drops per minute b.
Formula method
125 mL/hr
Ratio method
𝓍 = 125 mL/hr
54.
15 mL over 5 minutes
Formula method
180 mL/hr
Ratio method
𝓍 = 180 mL/hr
55.
20 mL over 8 minutes
Formula method
150 mL/hr
Ratio method
𝓍 = 150 mL/hr
56.
125 mL/hr
57.
𝓍 = 238 minutes = 3.96 hrs
This infusion is running at an approximately 4 hourly rate.
Calculate rate in mL/hr:
125 mL/hr
58.
a. 9 hrs remaining
b. 15 mins remaining
Brotto 1e Clinical Dosage Calculations for Australia and NZ – Solutions Manual
Chapter 13 © 2012 Cengage Australia Pty Ltd 9
59.
a. 8.8 mL diluent required
b. 9.3 mL diluents required
60.
a. 1.436 m2 or 1.44 m2
b. 1.333 m2 or 1.33 m2
61.
a. 350 mcg/min
Formula method
0.44 mL/min Calculate rate in mL/hr:
26.25 or 26.3 mL/hr
Ratio method
Calculate rate in mL/min:
𝓍 = 0.438 mL/min Calculate rate in mL/hr:
350 mcg min⁄ , which is the equivalent of 5 mcg kg⁄ min for⁄ this 70 kg patient
b. Infusion 3 mg (3000 mcg) Noradrenaline in 50 mL
Formula method
Calculate rate in mL/min:
0.133 mL/min Calculate rate in mL/hr:
7.99 or 8 mL/hr
Ratio method
Calculate rate in mL/min:
𝓍 = 0.133 mL/min Calculate rate in mL/hr:
7.99 or 8 mL hr⁄ rate
Drug chart questions:
Brotto 1e Clinical Dosage Calculations for Australia and NZ – Solutions Manual
Chapter 13 © 2012 Cengage Australia Pty Ltd 10
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Brotto 1e Clinical Dosage Calculations for Australia and NZ – Solutions Manual
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