Question

A nurse is preparing to administer 0.45% sodium chloride (NaCl) 1200 mL IV to infuse over 8 hr. The nurse should set the IV pump to deliver how many mL/hr? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero)

Answer 1

Correct Answers:

150

Rationale :

mL/hr = Total volume (mL) ÷ Time (hr)

Step 1: 1200 mL ÷ 8 hr = 150 mL/hr

✅ Final Answer: 150 mL/hr

Distractor Analysis :

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Answer 2

Correct Answers:

31

Rationale :

Step 1: Time = 8 hr × 60 = 480 min

Step 2: gtt/min = (1000 mL ÷ 480 min) × 15 gtt/mL = 31.25 → 31 gtt/min

✅ Final Answer: 31

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Answer 3

Correct Answers:

100

Rationale :

Formula:

gtt/min = (Total volume mL ÷ Time min) × Drop factor

Step 1: Time = 30 min

Step 2: gtt/min = (200 mL ÷ 30 min) × 15 gtt/mL

= 6.67 × 15

= 100.05 → 100 gtt/min

✅ Final Answer: 100 gtt/min

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Answer 4

Correct Answers:

28

Rationale :

Formula:

gtt/min = (Total volume mL ÷ Time min) × Drop factor

Step 1: Time = 6 hr × 60 = 360 min

Step 2: gtt/min = (1000 mL ÷ 360 min) × 10 gtt/mL

= 2.78 × 10

= 27.78 → 28 gtt/min

✅ Final Answer: 28 gtt/min

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Answer 5

Correct Answers:

83

Rationale :

Formula:

mL/hr = Total volume (mL) ÷ Time (hr)

Step 1: 1000 mL ÷ 12 hr = 83.33 mL/hr

Step 2: Round to nearest whole number → 83 mL/hr

✅ Final Answer: 83 mL/hr

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Answer 6

Correct Answers:

2

Rationale :

Step 1: Convert daily dose to mg

2 g × 1000 = 2000 mg/day

Step 2: Divide by number of doses per day

2000 mg ÷ 4 = 500 mg per dose

Step 3: Determine number of capsules per dose

500 mg ÷ 250 mg per capsule = 2 capsules

✅ Final Answer: 2 capsules

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Answer 7

Correct Answers:

2.5

Rationale :

Formula:

mL = (Desired dose ÷ Available dose) × Volume

Step 1: (20 mg ÷ 40 mg) × 5 mL

= 0.5 × 5

= 2.5 mL

✅ Final Answer: 2.5 mL

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Answer 8

Correct Answers:

8

Rationale :

Formula:

mL = (Desired dose ÷ Available dose) × Volume

Step 1: (400 mg ÷ 250 mg) × 5 mL

= 1.6 × 5

= 8 mL

✅ Final Answer: 8 mL

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Answer 9

Correct Answers:

2

Rationale :

Step 1: Desired dose per dose = 300 mg

Step 2: Available strength = 150 mg per capsule

Step 3: 300 mg ÷ 150 mg = 2 capsules

✅ Final Answer: 2 capsules

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Answer 10

Correct Answers:

2

Rationale :

Formula:

mL = Desired dose ÷ Available concentration

Step 1: 1,200,000 units ÷ 600,000 units/mL

= 2 mL

✅ Final Answer: 2 mL

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LPN Math Exam 1

No.

1 :
A nurse is preparing to administer 0.45% sodium chloride (NaCl) 1200 mL IV to infuse over 8 hr. The nurse should set the IV pump to deliver how many mL/hr? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero)

5 :
A nurse is preparing to administer 5% dextrose in 0.45% sodium chloride 1,000 mL IV to infuse over 12 hr. The nurse should set the IV pump to deliver how many mL/hr? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

7 :
A nurse is preparing to administer liquid famotidine 20 mg PO every 6 hr for a client who has GERD. Available is famotidine 40 mg/5 mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies.

8 :
A nurse is preparing to administer valproic acid 400 mg PO bid for migraine headaches. Available is valproic acid 250 mg/5mL. How many mL should the nurse administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

9 :
. A nurse is preparing to administer lithium 300 mg PO every 8 hr. Available is lithium carbonate 150 mg capsules. How many capsules should the nurse administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

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LPN Math Exam 1

No.

1 : A nurse is preparing to administer 0.45% sodium chloride (NaCl) 1200 mL IV to infuse over 8 hr. The nurse should set the IV pump to deliver how many mL/hr? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero)

5 : A nurse is preparing to administer 5% dextrose in 0.45% sodium chloride 1,000 mL IV to infuse over 12 hr. The nurse should set the IV pump to deliver how many mL/hr? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

7 : A nurse is preparing to administer liquid famotidine 20 mg PO every 6 hr for a client who has GERD. Available is famotidine 40 mg/5 mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies.

8 : A nurse is preparing to administer valproic acid 400 mg PO bid for migraine headaches. Available is valproic acid 250 mg/5mL. How many mL should the nurse administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

9 : . A nurse is preparing to administer lithium 300 mg PO every 8 hr. Available is lithium carbonate 150 mg capsules. How many capsules should the nurse administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

1 :
A nurse is preparing to administer 0.45% sodium chloride (NaCl) 1200 mL IV to infuse over 8 hr. The nurse should set the IV pump to deliver how many mL/hr? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero)

5 :
A nurse is preparing to administer 5% dextrose in 0.45% sodium chloride 1,000 mL IV to infuse over 12 hr. The nurse should set the IV pump to deliver how many mL/hr? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

7 :
A nurse is preparing to administer liquid famotidine 20 mg PO every 6 hr for a client who has GERD. Available is famotidine 40 mg/5 mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies.

8 :
A nurse is preparing to administer valproic acid 400 mg PO bid for migraine headaches. Available is valproic acid 250 mg/5mL. How many mL should the nurse administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

9 :
. A nurse is preparing to administer lithium 300 mg PO every 8 hr. Available is lithium carbonate 150 mg capsules. How many capsules should the nurse administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)