Questions 31

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Dosage Calculation NCLEX RN Questions Questions

Question 1 of 5

The primary healthcare provider (PHCP) prescribes 100 mg of amoxicillin oral suspension by mouth, four times a day. The nurse has amoxicillin 250 mg per 5 mL on hand. How many milliliters in a single dose should the nurse administer to the client? Fill in the blank.

Correct Answer: 2 mL

Rationale: Calculate: (100 mg ÷ 250 mg) × 5 mL = 2 mL.

Question 2 of 5

The primary healthcare provider (PHCP) prescribes 100 mL of 0.9% sodium chloride (normal saline) to infuse over two hours via intravenous microdrip tubing. The nurse sets the flow rate at how many drops per minute? Fill in the blank. Round your answer to the nearest whole number.

Correct Answer: 50 drops per minute

Rationale: Microdrip tubing has a drop factor of 60 gtts/mL. Calculate: (100 mL × 60 gtts/mL) ÷ (2 hr × 60 min/hr) = 6000 gtts ÷ 120 min = 50 gtts/min.

Question 3 of 5

The primary healthcare provider (PHCP) prescribes magnesium sulfate at 2 grams/hour. The nurse has magnesium sulfate 20 grams in 500 mL of 0.9% saline on hand. How many mL per hour will the nurse administer? Fill in the blank.

Correct Answer: 50 mL/hr

Rationale: Calculate: (2 g/hr ÷ 20 g) × 500 mL = 50 mL/hr.

Question 4 of 5

A client is receiving 10 mL/hr of a prescribed regular insulin infusion. The label on the bag reads 50 units of regular insulin in 100 mL of 0.9% saline. How many units of insulin is the client receiving every hour? Fill in the blank. Round your answer to the nearest whole number.

Correct Answer: 5 units/hour

Rationale: Calculate: (50 units ÷ 100 mL) × 10 mL/hr = 5 units/hr.

Question 5 of 5

The primary healthcare provider (PHCP) prescribes lidocaine at 2 mg/min. The medication label reads lidocaine 1 gram in 500 mL of 0.9% saline. How many mL per hour will the nurse administer to the client? Fill in the blank.

Correct Answer: 60 mL/hr

Rationale: Convert: 1 g = 1000 mg, so 1000 mg/500 mL = 2 mg/mL. Flow rate: (2 mg/min ÷ 2 mg/mL) × 60 min/hr = 60 mL/hr.

Similar Questions

The nurse is caring for a client prescribed IV heparin. The client is prescribed 15 units/kg/hr. The client weighs 115.9 kg (254.8 lbs). The heparin is labeled with 25,000 units in 250 mL of D5W. How many mL/hr should this client receive? Fill in the blank. Record your answer using a whole number.
The primary healthcare provider (PHCP) prescribes 500 mg of intravenous (IV) metronidazole to be administered over thirty minutes. The pharmacy supplies the medication in a bag labeled 500 mg of metronidazole in 100 mL of 0.9% saline. How many mL/hour should the nurse administer to the client? Fill in the blank.
The nurse is calculating intake for a client for the previous twelve-hour shift. The client received: ,¢ One 150 mL intravenous antibiotic ,¢ One eight-ounce cup of coffee ,¢ One eight-ounce cup of ice cream ,¢ Three eight-ounce cups of water ,¢ Two 10 mL sodium chloride (normal saline) flushes. The nurse should calculate the client's total intake as how many mL? Fill in the blank.
The nurse is calculating the 12-hour intake for a client. The client received: ,¢ 0.45% saline at 85 mL/hr via continuous infusion ,¢ One eight-ounce cup of ice chips ,¢ One eight-ounce cup of coffee ,¢ One eight-ounce cup of ice cream ,¢ Three eight-ounce cups of water ,¢ One eight-ounce cup of pureed vegetables. The nurse should calculate the client's total liquid intake as how many mL? Fill in the blank.
The primary healthcare provider (PHCP) prescribes cefdinir 25 mg/kg/day in divided doses every six hours. The infant weighs 8 kg (17.6 lbs). How many milligrams should the nurse administer per dose? Fill in the blank. Round your answer to a whole number.

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