Weight-Based Dosage Calculations Practice

1. Question 1
   • They relate the dose to body weight when precise dosing is important.
   • They make the medication concentration unnecessary.
   • They eliminate the need to review the medication label.
   • They allow pounds and kilograms to be used interchangeably.
2. Question 2
   • 12 kg
   • 15 kg
   • 20 kg
   • 72.6 kg
3. Question 3
   • 7 kg for every milligram
   • 7 mg for every kilogram of body weight
   • 7 mg for the entire medication container
   • 7 mL for every kilogram
4. Question 4
   • 160 mg
   • 176 mg
   • 352 mg
   • 5.5 mg
5. Question 5
   • Round the weight, select a volume, then check the label
   • Multiply pounds by 2.2, divide by the order, then ignore the concentration
   • Convert weight if needed, calculate mg, convert mg to mL, then round and verify
   • Round the concentration, calculate mL, then determine the milligram dose
6. Question 6
   • Multiply 18 by 2.2 and then divide by 2.2 again
   • Convert 18 kg to pounds before every calculation
   • Divide 18 by 2.2
   • Use 18 kg directly
7. Question 7
   • kg
   • mg/kg
   • lb
   • mL
8. Question 8
   • $\frac{4\text{ mL}}{80\text{ mg}}$
   • $\frac{4\text{ mg}}{80\text{ mL}}$
   • $\frac{80\text{ mL}}{4\text{ mg}}$
   • $\frac{80\text{ mg}}{4\text{ mL}}$
9. Question 9
   • $12\text{ kg}\times\frac{1\text{ kg}}{5\text{ mg}}\times\frac{20\text{ mL}}{1\text{ mg}}$
   • $12\text{ kg}\times\frac{1\text{ mg}}{5\text{ kg}}\times\frac{20\text{ mL}}{1\text{ kg}}$
   • $12\text{ kg}\times\frac{5\text{ kg}}{1\text{ mg}}\times\frac{20\text{ mg}}{1\text{ mL}}$
   • $12\text{ kg}\times\frac{5\text{ mg}}{1\text{ kg}}\times\frac{1\text{ mL}}{20\text{ mg}}$
10. Question 10
    • mL and kg
    • mL and mg
    • mg and kg
    • mg with mg and kg with kg
11. Question 11
    • lb in the numerator and kg in the denominator
    • mL in the numerator and kg in the denominator
    • mg in the numerator and lb in the denominator
    • kg in the numerator and lb in the denominator
12. Question 12
    • $\text{mL}\times\frac{\text{mg}}{\text{mL}}$
    • $\text{kg}\times\frac{\text{mg}}{\text{kg}}$
    • $\text{mg}\times\frac{\text{kg}}{\text{lb}}$
    • $\text{lb}\times\frac{\text{kg}}{\text{lb}}\times\frac{\text{mg}}{\text{kg}}\times\frac{\text{mL}}{\text{mg}}$
13. Question 13
    • $150\text{ mL}\times\frac{2\text{ mg}}{50\text{ mL}}$
    • $150\text{ mg}\times\frac{50\text{ mL}}{2\text{ mg}}$
    • $150\text{ mg}\times\frac{2\text{ mL}}{50\text{ mg}}$
    • $150\text{ mg}\times\frac{50\text{ mg}}{2\text{ mL}}$
14. Question 14
    • They convert 22 kg to 2.2 lb.
    • They remove the need for a prescribed mg/kg dose.
    • They convert 22 lb to 48.4 kg.
    • They convert 22 lb to 10 kg.
15. Question 15
    • All units cancel, leaving no unit.
    • The final unit is mg/kg.
    • The final unit is mL.
    • The final unit is kg.
16. Question 16
    • $\frac{6\text{ mL}}{120\text{ mg}}$
    • $\frac{6\text{ mg}}{120\text{ mL}}$
    • $\frac{120\text{ mL}}{6\text{ mg}}$
    • $\frac{120\text{ mg}}{6\text{ mL}}$
17. Question 17
    • $22\text{ lb}\times\frac{2.2\text{ lb}}{1\text{ kg}}$
    • $22\text{ lb}\times\frac{1\text{ kg}}{2.2\text{ lb}}$
    • $150\text{ mg}\times\frac{5\text{ mL}}{160\text{ mg}}$
    • $10\text{ kg}\times\frac{6\text{ mg}}{1\text{ kg}}$
18. Question 18
    • 150 mg
    • 330 mg
    • 13.64 mg
    • 25 mg
19. Question 19
    • 3.52 mg
    • 19.8 mg
    • 12 mg
    • 90 mg
20. Question 20
    • 0.6 mL
    • 3.6 mL
    • 6 mL
    • 10 mL
21. Question 21
    • 3 mL
    • 9 mL
    • 2 mL
    • 6 mL
22. Question 22
    • 1.8 mL
    • 6 mL
    • 3.6 mL
    • 18 mL
23. Question 23
    • Only the final rounded volume
    • Only the concentration numbers
    • Only the patient's pounds
    • All numerator factors and all denominator factors
24. Question 24
    • 3 mL
    • 9 mL
    • 6 mL
    • 18 mL
25. Question 25
    • 1 mL
    • 0.4 mL
    • 8 mL
    • 2 mL
26. Question 26
    • 4.6875 mL
    • 5.3333 mL
    • 0.9375 mL
    • 46.875 mL
27. Question 27
    • 4 mL
    • 3 mL
    • 6 mL
    • 15 mL
28. Question 28
    • 2 mL
    • 20 mL
    • 4 mL
    • 8 mL
29. Question 29
    • 4.68 mL
    • 4.6 mL
    • 4.69 mL
    • 4.70 mL
30. Question 30
    • Round the final volume to the nearest hundredth unless another instruction is given.
    • Always round the weight to the nearest whole pound first.
    • Round every intermediate result to the nearest whole number.
    • Round the supplied concentration before setting up the equation.

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