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A nurse is preparing to administer diazepam 0.3 mg/kg IV bolus to a toddler who weighs 24 Ib. Available is diazepam injection 5 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest hundredth. Use a leading zero if it applies. Do not use a trailing zero.)

Answer and Explanation

The Correct Answer is ["0.65"]

Let’s calculate this step by step:

Step 1: Convert the toddler’s weight from pounds (lb) to kilograms (kg) using the conversion factor 1 kg = 2.2 lbs.

24 lbs ÷ 2.2 lbs/kg = 10.91 kg

Step 2: Calculate the total amount of diazepam needed using the dosage of 0.3 mg/kg.

0.3 mg/kg × 10.91 kg = 3.27 mg

Step 3: Calculate the volume of diazepam injection to administer using the concentration of 5 mg/mL.

3.27 mg ÷ 5 mg/mL = 0.654 mL

Rounding to the nearest hundredth, the nurse should administer 0.65 mL of diazepam injection.

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Correct Answer is ["4.2"]

Explanation

Step 1: Convert the preschooler’s weight from pounds to kilograms. 37 lbs ÷ 2.2 = 16.8181 kg (rounded to four decimal places)

Step 2: Calculate the total daily dose of cephalexin in mg. 50 mg/kg/day × 16.8181 kg = 840.905 mg/day (rounded to three decimal places)

Step 3: Determine the number of doses per day. 24 hours ÷ 6 hours = 4 doses/day

Step 4: Calculate the dose per administration. 840.905 mg/day ÷ 4 doses/day = 210.22625 mg/dose (rounded to five decimal places)

Step 5: Convert the dose from mg to mL using the available suspension concentration. 250 mg ÷ 5 mL = 50 mg/mL

Step 6: Calculate the volume to be administered per dose. 210.22625 mg ÷ 50 mg/mL = 4.204525 mL (rounded to six decimal places)

Step 7: Round the final answer to the nearest tenth. 4.204525 mL rounded to the nearest tenth = 4.2 mL

Therefore, the nurse should administer 4.2 mL per dose.

Correct Answer is ["0.019"]

Explanation

19,000 mcg of haloperidol is equivalent to 0.019 g.

To calculate this, use the conversion factor that 1 g is equivalent to 1,000,000 mcg. So, 19,000 mcg * (1 g / 1,000,000 mcg) = 0.019 g.

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A nurse is preparing to administer diazepam 0.3 mg/kg IV bolus to a toddler who weighs 24 Ib. Available is diazepam injection 5 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest hundredth. Use a leading zero if it applies. Do not use a trailing zero.)

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Naxlex Comprehensive Predictor Exams

Correct Answer is ["4.2"]

Explanation

A nurse is preparing to administer haloperidol 19,000 mcg PO to a school-age child who has Tourete's syndrome. The nurse should recognize that this is equivalent to how many g? (Round the answer to the nearest thousandth. Use a leading zero if applicable. Do not use a trailing zero.)

Correct Answer is ["0.019"]

Explanation

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A nurse is preparing to administer diazepam 0.3 mg/kg IV bolus to a toddler who weighs 24 Ib. Available is diazepam injection 5 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest hundredth. Use a leading zero if it applies. Do not use a trailing zero.)

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