NCLEX RN Dosage Calculation Questions
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Question 1 of 5.
The primary healthcare provider (PHCP) prescribes 30 mg of phenobarbital by mouth, once daily. The nurse has phenobarbital 10 mg tablets on hand. How many tablet(s) per dose should the nurse administer to the client? Fill in the blank.
Answer: 3 tablets
Explanation: Calculate: 30 mg ÷ 10 mg/tablet = 3 tablets.
Question 2 of 5.
The primary healthcare provider (PHCP) prescribes three liters of 0.9% saline to infuse over 24-hours. How many mL per hour will be administered to the client? Fill in the blank.
Answer: 125 mL/hour
Explanation: To calculate mL/hour, convert 3 liters to 3000 mL (since 1 L = 1000 mL) and divide by 24 hours: 3000 mL ÷ 24 hr = 125 mL/hour.
Question 3 of 5.
The nurse is caring for a client who weighs 85 kg (187 lbs) who sustained a 27% total body surface area burn. Using the Parkland formula, calculate how many mL of intravenous fluid (IVF) the nurse will administer in the first eight hours. Fill in the blank.
Answer: 4590 mL
Explanation: The Parkland formula is 4 mL × kg × % burn. For 85 kg and 27% burn: 4 × 85 × 27 = 9180 mL total. Half is given in the first 8 hours: 9180 ÷ 2 = 4590 mL.
Question 4 of 5.
A client with a stroke is prescribed alteplase. The prescription is for 0.9 mg/kg. The client weighs 116.82 kg (257 lbs). How many milligrams will the nurse administer? Fill in the blank. Record your answer to the nearest whole number.
Answer: 105 mg
Explanation: Calculate dose: 0.9 mg/kg × 116.82 kg = 105.138 mg, rounded to 105 mg.
Question 5 of 5.
The primary healthcare provider (PHCP) prescribes 400,000 units of penicillinG benzathine. The label on the medication reads penicillinG benzathine 300,000 units / 10 mL. How many milliliters will the nurse administer to the client? Fill in the blank. Round your answer to the nearest whole number.
Answer: 13 mL
Explanation: Calculate: (400,000 units ÷ 300,000 units) × 10 mL = 1.333 × 10 = 13.33 mL, rounded to 13 mL.
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