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A client is to receive a 7.5 mg/kg dose of a drug. The client weighs 155 lb. The client would receive ??..per dose
- A. 450.0 mg
- B. 528.4 mg
- C. 600.0 mg
- D. 675.0 mg
Correct Answer: B
Rationale: First, the client's weight needs to be converted to kilograms. 155 lb ? 1 kg / 2.2 lb = 70.5 kg. Then the drug dosage is calculated as follows: 70.5 kg ? 7.5 mg/kg = 528.4 mg.
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Which of the following drug doses is written correctly? Select all that apply.
- A. Synthroid 0.175 \mathrm{mg}
- B. Synthroid 175 \mathrm{mg}
- C. Synthroid 175 \mathrm{mcg}
- D. Synthroid 175.0 \mathrm{mcg}
- E. Synthroid 1750 \mathrm{mg}
Correct Answer: A,C
Rationale: When there is no number to the left of the decimal, a zero is written; therefore, Synthroid 0.175 mg and 175 mcg are correct.
A client is to receive 0.5 mg of a drug parenterally. The drug is available in a 2 mg/mL vial. The nurse would administer
- A. 0.25 mL
- B. 0.5 mL
- C. 1.0 mL
- D. 2.0 mL
Correct Answer: A
Rationale: 0.5 mg ? 1 mL / 2 mg = 0.25 mL
A client has been taking warfarin (Coumadin) 5 \mathrm{mg} daily. After a check of the client's INR, the physician wants to increase the client's dose to 7.5 \mathrm{mg} on Wednesdays and continue 5 \mathrm{mg} all the other days of the week. The client has warfarin 5 -mg tablets on hand. The nurse would instruct the client to take tablets on Wednesdays.
- A. 1 tablet
- B. 1.5 tablets
- C. 2 tablets
- D. 2.5 tablets
Correct Answer: B
Rationale: 7.5 mg / 5 mg = 1.5
A medication is ordered for a client. The dosage he is to receive is 100,000 units. The drug label reads 400,000 units/mL. When setting up the dosage calculation using dimensional analysis, the nurse identifies the unit of measure to be calculated as which of the following?
- A. Milliliters
- B. Units
- C. Milligrams
- D. Tablets
Correct Answer: A
Rationale: The order specifies the client is to receive 100,000 units, and the drug is supplied as 400,000 units/mL. Using dimensional analysis, the goal is to calculate the volume (mL) to administer, so the unit of measure to be calculated is milliliters.
A group of nursing students are reviewing the various systems of measurement. The students demonstrate understanding of the information when they identify which of the following as a metric system unit? Select all that apply.
- A. Inch
- B. Milligram
- C. Centimeter
- D. Ounce
- E. Pound
Correct Answer: B,C
Rationale: The metric system uses the gram, liter, and meter. Milligram and centimeter are metric units.