Ati Dosage calculation rn paediatrics of nursing proctored assessment 3.2

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Question 1: View

A nurse is preparing to administer 7.5 mL of ampicillin 250 mg oral suspension to a toddler who has otitis media. The nurse should recognize that 7.5 mL is equivalent to how many tsp? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Explanation

Step-by-step calculation:

Convert to milliliters (mL) to teaspoons (tsp).

The conversion factor is: 1 teaspoon (tsp) = 5 milliliters (mL)

Performing the calculation:

Divide the given milliliters by the conversion factor:

7.5 mL ÷ 5 mL/tsp = 1.5 tsp

Rounding the answer: 1.5 is already rounded to the nearest tenth.

Question 2: View

A nurse is preparing to administer ceftazidime 40 mg/kg IV bolus every 8 hr to a school-age child who weighs 77 lb. Available is ceftazidime injection 40 mg/mL. 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.)

Explanation

Step by step calculation:

Calculating the total dose in mg:

Convert the child's weight to kg: 77 lb ÷ 2.2 lb/kg = 35 kg

Calculate the total dose: 35 kg × 40 mg/kg = 1400 mg

Calculating the volume to administer:

Use the concentration of the medication: 1400 mg ÷ 40 mg/mL = 35 mL

Question 3: View

A nurse is preparing to administer promethazine 15 mg IM to a child. The amount available is promethazine 50 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.)

Explanation

Step by step calculation:

The desired dose of promethazine is 15 mg.

The available concentration is 50 mg/mL.

Calculating the volume to administer:

Use the concentration of the medication: 15 mg ÷ 50 mg/mL = 0.3 mL

Question 4: View

A nurse is preparing to administer 0.9% sodium chloride 100 mL IV to infuse over 15 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.)

Explanation

Step by step calculation:

The nurse needs to administer 100 mL of sodium chloride.

The infusion time is 15 minutes.

Calculating the flow rate in mL/hr:

Convert the infusion time to hours: 15 minutes ÷ 60 minutes/hour = 0.25 hours

Divide the total volume by the infusion time: 100 mL ÷ 0.25 hours = 400 mL/hour

Question 5: View

A nurse is preparing to administer buprenorphine 4 mcg/kg IV bolus to a child who weighs 74 lb. Available is buprenorphine injection 0.3 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.)

Explanation

Calculating the total dose in mg:

Convert the child's weight to kg: 74 lb ÷ 2.2 lb/kg = 33.64 kg

Calculate the total dose: 33.64 kg × 4 mcg/kg = 134.56 mcg

Converting mcg to mg:

1 mg = 1000 mcg

134.56 mcg ÷ 1000 mcg/mg = 0.13456 mg

Calculating the volume to administer:

Use the concentration of the medication: 0.13456 mg ÷ 0.3 mg/mL = 0.45 mL

Question 6: View

A nurse is preparing to administer ketorolac 12 mg IV bolus to an adolescent. The amount available is ketorolac injection 15 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.)

Explanation

Step by step calculation:

The desired dose of ketorolac is 12 mg.

The available concentration is 15 mg/mL.

Calculating the volume to administer:

Use the concentration of the medication: 12 mg ÷ 15 mg/mL = 0.8 mL

Question 7: View

A nurse is preparing to administer magnesium hydroxide 0.85 g PO to a school-age child. How many mg 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.)

Explanation

Step by step calculation:

The desired dose of magnesium hydroxide is 0.85 g.

We need to convert grams to milligrams.

Converting grams to milligrams:

1 g = 1000 mg

0.85 g x 1000 mg/g = 850 mg

Question 8: View

A nurse is preparing to administer 0.33% sodium chloride 120 mL IV to infuse over 30 min to a preschooler. 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.)

Explanation

Step-by-step calculation:

The nurse needs to administer 120 mL of sodium chloride.

The infusion time is 30 minutes.

Calculating the flow rate in mL/hr:

Convert the infusion time to hours: 30 minutes ÷ 60 minutes/hour = 0.5 hours

Divide the total volume by the infusion time: 120 mL ÷ 0.5 hours = 240 mL/hour

Question 9: View

A nurse is preparing to administer gentamicin 2 mg/kg IM to a school-age child who weighs 55 lb. Available gentamicin injection 40 is 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.)

Explanation

Step-by-step calculation:

The child's weight is 55 lb.

The medication dosage is 2 mg/kg.

The available medication concentration is 40 mg/mL.

Calculating the total dose in mg:

Convert the child's weight to kg: 55 lb ÷ 2.2 lb/kg = 25 kg

Calculate the total dose: 25 kg × 2 mg/kg = 50 mg

Calculating the volume to administer:

Use the concentration of the medication: 50 mg ÷ 40 mg/mL = 1.25 mL

Rounding the answer:1.25 rounds to 1.3 mL

Question 10: View

A nurse is administering azithromycin 10 mg/kg PO to a toddler who weighs 27 lb. Available is azithromycin suspension 200 mg/5 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.)

Explanation

Step by step calculation:

The child's weight is 27 lb.

The medication dosage is 10 mg/kg.

The available medication concentration is 200 mg/5 mL.

Calculating the total dose in mg:

Convert the child's weight to kg: 27 lb ÷ 2.2 lb/kg = 12.27 kg

Calculate the total dose: 12.27 kg × 10 mg/kg = 122.7 mg

Calculating the volume to administer:

Use the concentration of the medication: 122.7 mg ÷ (200 mg/5 mL) = 122.7 mg ÷ 40 mg/mL = 3.0675 mL

Rounding the answer:

3.0675 rounds to 3 mL

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