NCLEX Dosage Calculation Test BankPart 1: 20 Items

NCLEX Dosage Calculation Test Bank(Part 1: 20 Items)

Question 1 of 20

• Question

You are caring for a patient at home who must take magnesium hydroxide/aluminum hydroxide (Maalox) 30 mL PO. How will you instruct the patient to measure the dose using ordinary household measuring devices? Fill in the blanks. Record your answer to the nearest whole number.

•Answer:  (2) tbsp.

Correct answer: 

2 tbsp.

Rationale: 

One tablespoon is equal to 15 mL.Convert 30 mL to tablespoons by multiplying it by one tablespoon.Then, divide 30 by 15 mL to get the final answer of 2 tbsp.

Computation:

• Question

A patient has a bottle of warfarin (Coumadin) 5 mg tablets at home. After his most recent international normalized ratio (INR), the doctor calls and tells him to take 7.5 mg/day. How many tablets (scored) should the patient take? Fill in the blanks and record your answer using one decimal place. 

•Answer:  (1.5) tablet(s)

Correct answer: 

1.5 tablet

Formula: 

Rationale:

Use the standard formula above.

First, multiply the desired dose (7.5 mg) to the vehicle (1 tablet) to get 7.5mg.Then, divide 7.5 mg by the drug on hand (5 mg) to get 1.5 tablets.

Computation:

• Question

You have an IVPB of ranitidine (Zantac) 50 mg in 50 mL D5W to run over 30 minutes. The tubing has a drip factor of 15. How many drops per minute will you set on the IV infusion controller? Fill in the blanks.

•Answer:  (25) gtts/minute

Correct answer:

25 gtts/minute

Formula:

Rationale:

Use the IV flow rate formula for gtts/minute above.Multiply 50 mL (total volume) to 15 gtts (drop factor) to get 750 gtts.Divide 750 gtts with 30 minutes (time in minutes) to get 25 gtts/minute.

Computation:

Question 4 of 20

• Question

The physician orders alprazolam (Xanax) 0.5 mg PO. You have on hand Xanax 0.25 mg tablets. How many tablet(s) will you give? Fill in the blanks.

•Answer:  (2) tablets(s)

Correct answer: