Question

A nurse is preparing to administer regular insulin 0.1 units/kg/hr by continuous IV infusion for a client who weighs 180 lb. Available is regular insulin 500 units in 500 mL of 0.9% sodium chloride. The nurse should set the IV pump to deliver how many mL/hr? (Round to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Answer 1

Correct Answers:

8

Rationale :

✍️Formula

🟦mL/hr = Ordered dose (units/hr) ÷ Concentration (units/mL)

✍️Convert lb to kg

🟦 180 lb ÷ 2.2 = 81.8 kg

✍️Find ordered dose per hour

🟦 0.1 units × 81.8 kg = 8.18 units/hr

✍️Find concentration available

🟦 500 units in 500 mL = 1 unit/mL

✍️Calculate mL/hr

🟦8.18 units/hr ÷ 1 unit/mL

📌8.18 mL/hr

📌Round to nearest whole number 8 mL/hr

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Answer 2

Correct Answers:

0.4

Rationale :

✍️Formula

🟪mL = Ordered dose ÷ Dose on hand × Volume on hand

✍️Identify ordered dose

🟪Ordered = 0.4 mg

✍️Identify available concentration

🟪 Available = 1 mg/mL

✍️Calculate volume

🟪0.4 mg ÷ 1 mg × 1 mL

📌 0.4 mL

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Answer 3

Correct Answers:

0.25

Rationale :

✍️Formula

🟨mg = mcg ÷ 1,000

✍️Identify ordered amount

🟨Ordered = 250 mcg

✍️Convert mcg to mg

🟨250 ÷ 1,000

📌0.25 mg

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Answer 4

Correct Answers:

1.5

Rationale :

✍️Formula

🟩mL = Ordered dose (mg) ÷ Concentration (mg/mL)

✍️Convert lb to kg

🟩110 lb ÷ 2.2 = 50 kg

✍️Calculate ordered dose in mg

🟩 0.03 mg × 50 kg = 1.5 mg

✍️Identify concentration

🟩 Available = 1 mg/mL

✍️Calculate mL

🟩1.5 mg ÷ 1 mg/mL

📌1.5 mL

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Answer 5

Correct Answers:

4

Rationale :

✍️Formula

🟥mL = Ordered dose ÷ Dose on hand × Volume on hand

✍️Identify ordered dose

🟥 Ordered = 10 mg

✍️ Identify available dose

🟥 Available = 5 mg in 2 mL

✍️Calculate volume

🟥10 mg ÷ 5 mg × 2 mL

📌 4 mL

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Answer 6

Correct Answers:

25

Rationale :

✍️Formula

🟧mL/hr = Total volume ÷ Total hours

✍️Identify total volume

🟧Total volume = 100 mL

✍️Identify infusion time

🟧Time = 4 hr

✍️Calculate rate

🟧100 mL ÷ 4 hr

📌25 mL/hr

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Answer 7

Correct Answers:

12.2

Rationale :

✍️Formula

🟫mL/hr = Ordered dose (mcg/min) ÷ Concentration (mcg/mL) × 60

✍️Find the new dose

🟫Initial dose = 0.3 mcg/kg/min

🟫BP is still high, so increase by 0.3 mcg/kg/min

🟫New dose = 0.6 mcg/kg/min

✍️Calculate ordered mcg/min

🟫0.6 mcg × 68 kg = 40.8 mcg/min

✍️Find concentration in mcg/mL

🟫50 mg = 50,000 mcg

🟫50,000 mcg in 250 mL = 200 mcg/mL

✍️Convert to mL/min

🟫40.8 mcg/min ÷ 200 mcg/mL = 0.204 mL/min

✍️Convert to mL/hr

🟫0.204 × 60

📌12.24 mL/hr

📌Round to nearest tenth 12.2 mL/hr

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Answer 8

Correct Answers:

38

Rationale :

✍️Formula

🔵mL/hr = Ordered dose (mg/min) ÷ Concentration (mg/mL) × 60

✍️Find concentration

🔵1 g = 1,000 mg

🔵1,000 mg in 250 mL = 4 mg/mL

✍️Convert mg/min to mL/min

🔵2.5 mg/min ÷ 4 mg/mL = 0.625 mL/min

✍️Convert to mL/hr

🔵0.625 × 60

📌37.5 mL/hr

📌Round to nearest whole number 38 mL/hr

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Answer 9

Correct Answers:

3.5

Rationale :

✍️Formula

🟣mL = Ordered dose ÷ Dose on hand × Volume on hand

✍️Convert lb to kg

🟣154 lb ÷ 2.2 = 70 kg

✍️Find ordered dose

🟣0.25 mg × 70 kg = 17.5 mg

✍️Identify available concentration

🟣25 mg in 5 mL

✍️Calculate volume

🟣17.5 mg ÷ 25 mg × 5 mL

📌 3.5 mL

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Answer 10

Correct Answers:

167

Rationale :

✍️Formula

⚫mL/hr = Total volume ÷ Time in hours

✍️Identify total volume

⚫Total volume = 250 mL

✍️Convert minutes to hours

⚫90 min ÷ 60 = 1.5 hr

✍️Calculate infusion rate

⚫250 mL ÷ 1.5 hr

📌166.7 mL/hr

📌Round to nearest whole number 167 mL/hr

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Dosage Calculation RN Critical Care Proctored Assessment 3.2

No.

2 :
A nurse is preparing to administer naloxone 0.4 mg IV bolus to a client who is experiencing opioid toxicity. Available is naloxone injection 1 mg/mL How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

3 :
A nurse is preparing to administer filgrastim 250 mcg subcutaneous. How many mg should the nurse administer? (Round the answer to the nearest hundredth. Use a leading zero if it applies. Do not use a trailing zero.)

4 :
A nurse is preparing to administer midazolam 0.03 mg/kg IM to a client who weighs 110 lb. Available is midazolam 1 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

5 :
A nurse is preparing to administer verapamil 10 mg IV bolus. Available is verapamil injection 5 mg/2 mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

10 :
A nurse is preparing to administer vancomycin 1 g in 250 mL 0.9% sodium chloride by intermittent IV bolus over 90 min. 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.)

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Dosage Calculation RN Critical Care Proctored Assessment 3.2

No.

2 : A nurse is preparing to administer naloxone 0.4 mg IV bolus to a client who is experiencing opioid toxicity. Available is naloxone injection 1 mg/mL How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

3 : A nurse is preparing to administer filgrastim 250 mcg subcutaneous. How many mg should the nurse administer? (Round the answer to the nearest hundredth. Use a leading zero if it applies. Do not use a trailing zero.)

4 : A nurse is preparing to administer midazolam 0.03 mg/kg IM to a client who weighs 110 lb. Available is midazolam 1 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

5 : A nurse is preparing to administer verapamil 10 mg IV bolus. Available is verapamil injection 5 mg/2 mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

10 : A nurse is preparing to administer vancomycin 1 g in 250 mL 0.9% sodium chloride by intermittent IV bolus over 90 min. 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.)

2 :
A nurse is preparing to administer naloxone 0.4 mg IV bolus to a client who is experiencing opioid toxicity. Available is naloxone injection 1 mg/mL How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

3 :
A nurse is preparing to administer filgrastim 250 mcg subcutaneous. How many mg should the nurse administer? (Round the answer to the nearest hundredth. Use a leading zero if it applies. Do not use a trailing zero.)

4 :
A nurse is preparing to administer midazolam 0.03 mg/kg IM to a client who weighs 110 lb. Available is midazolam 1 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

5 :
A nurse is preparing to administer verapamil 10 mg IV bolus. Available is verapamil injection 5 mg/2 mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

10 :
A nurse is preparing to administer vancomycin 1 g in 250 mL 0.9% sodium chloride by intermittent IV bolus over 90 min. 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.)