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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
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A group of nursing students are reviewing information about drugs and how they are supplied for parenteral administration. The students demonstrate understanding of the information when they identify which forms as available for parenteral administration? Select all that apply.
- A. Disposable syringes
- B. Reusable cartridges
- C. Ampules containing liquid form of the drug
- D. Reusable vial containing liquid form of the drug
- E. Vial containing drug powder
Correct Answer: A,C,D,E
Rationale: Parenteral drugs may be available in the following forms: liquids in disposable cartridges or disposable syringes; ampules or vials that contain the liquid form of the drug; and ampules or vials that contain the powder or crystal form of the drug. These vials may be single-dose or multidose vials.
A client is prescribed 500 mg of ampicillin IM. The drug is supplied in a multidose vial that requires reconstitution with 2 mL sterile water for injection. The resulting concentration contains 250 mg/mL. How much of the drug would the nurse administer?
- A. 0.5 mL
- B. 1.0 mL
- C. 1.5 mL
- D. 2.0 mL
Correct Answer: D
Rationale: The drug is supplied as 250 mg/mL after reconstitution. To calculate the amount needed, set up the equation: 500 mg / 250 mg ? 1 mL = 2.0 mL.
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.
The physician writes an order for a client to receive 1 mg of vitamin B12 once every month. Vitamin B12 comes in a 1000 mcg/mL vial. The nurse would administer ?... to the client each month.
- A. 0.5 mL
- B. 1.0 mL
- C. 1.5 mL
- D. 2.0 mL
Correct Answer: B
Rationale: First, the nurse needs to convert the milligrams to micrograms. Therefore, 1 mg = 1000 mcg. Since there is 1000 mcg/mL, the nurse would give 1 mL.
A client is to receive 250 mg of penicillin VK twice daily for 10 days. Penicillin VK is available in a 500 mg tablet. The nurse would instruct the client to take???.tablet at each dose.
- A. 1/4 tablet
- B. 1/2 tablet
- C. 1 tablet
- D. 2 tablets
Correct Answer: B
Rationale: 250 mg / 500 mg = 0.5 tablets.