ATI DOSAGE CALCULATION RN NURSING CARE OF CHILDREN 3.1
COMPREHENSIVE STUDY GUIDE WITH HIGH-YIELD PRACTICE
QUESTIONS, DETAILED ANSWER EXPLANATIONS AND RATIONALES,
PEDIATRIC DOSAGE CALCULATIONS, SAFE MEDICATION
ADMINISTRATION PRINCIPLES, NURSING CARE OF CHILDREN
CONCEPTS, TEST-TAKING STRATEGIES, AND COMPLETE NURSING
EXAM SUCCESS TOOLKIT | UPDATED FOR 2026/2027 | LATEST EDITION
Question 1: View
A nurse is preparing to administer ketorolac 0.4 mg/kg IM to an adolescent who weighs 96.8
Ib. The amount available is ketorolac 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
To calculate this, first convert the adolescent's weight from
pounds to kilograms: 96.8 lb * (1 kg / 2.2 lb) =
44 kg.
Then, calculate the dose of ketorolac in mg: 0.4 mg/kg * 44 kg
= 17.6 mg.
Finally, divide the dose in mg by the concentration of the ketorolac to find the volume to
administer: 17.6 mg / (15 mg/mL) = 1.173 mL, which rounds to 1.2mL when rounded to the
nearest tenth.
Question 2: V 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.) Explanation
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.
Question 3: 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
7.5 mL is equivalent to 1.5 tsp.
To calculate this, use the conversion factor that 1 tsp is equivalent to 5 mL. So, 7.5 mL * (1 tsp /
5 mL) = 1.5 tsp.
Question 4: View
A nurse is preparing to administer dextrose 5% in 0.9% sodium chloride 125 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
To calculate this, first convert the infusion time from minutes
, to hours: 15 min * (1 hr / 60 min) = 0.25 hr.
Then, divide the volume of the infusion by the infusion time to
find the rate: 125 mL / 0.25 hr = 500 mL/hr.
Question 5: View
A nurse is preparing to administer dextrose 5% in water 800 mL IV to infuse over 6 hr to an
adolescent client. 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
To calculate this, divide the volume of the infusion by the
infusion time to find the rate: 800 mL / 6 hr =
133.33 mL/hr, which rounds to 133 mL/hr when rounded to
the nearest whole number.
Question 6: View
A nurse is preparing to administer morphine 0.1 mg/kg IV bolus every 3 to 4 hr PRN for pain
to a school-age child who weighs 51 lb. Available is morphine injection 2 mg/mL. How
many mL should the nurse administer per dose? (Round the answer to the nearest tenth.
Use a leading zero if it applies. Do not use a trailing zero.) Explanation
Step 1 is to convert the child’s weight from pounds to kilograms since the dosage of morphine is
prescribed in mg/kg. We know that 1 kg is approximately equal to 2.2 lb. So, the child’s weight
in kg is:
51 lb ÷ 2.2 = 23.18 kg
Step 2 is to calculate the total amount of morphine the child
should receive per dose. The doctor ordered 0.1 mg of
morphine per kg of body weight. So, the total amount of
morphine per dose is:
0.1 mg/kg × 23.18 kg = 2.318 mg
Step 3 is to calculate the volume of morphine injection to be administered. We know that the
available morphine injection has a concentration of 2 mg/mL. So, the volume in mL is:
2.318 mg ÷ (2 mg/mL) = 1.159 mL
Rounding this to the nearest tenth gives 1.2 mL. So, the nurse
COMPREHENSIVE STUDY GUIDE WITH HIGH-YIELD PRACTICE
QUESTIONS, DETAILED ANSWER EXPLANATIONS AND RATIONALES,
PEDIATRIC DOSAGE CALCULATIONS, SAFE MEDICATION
ADMINISTRATION PRINCIPLES, NURSING CARE OF CHILDREN
CONCEPTS, TEST-TAKING STRATEGIES, AND COMPLETE NURSING
EXAM SUCCESS TOOLKIT | UPDATED FOR 2026/2027 | LATEST EDITION
Question 1: View
A nurse is preparing to administer ketorolac 0.4 mg/kg IM to an adolescent who weighs 96.8
Ib. The amount available is ketorolac 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
To calculate this, first convert the adolescent's weight from
pounds to kilograms: 96.8 lb * (1 kg / 2.2 lb) =
44 kg.
Then, calculate the dose of ketorolac in mg: 0.4 mg/kg * 44 kg
= 17.6 mg.
Finally, divide the dose in mg by the concentration of the ketorolac to find the volume to
administer: 17.6 mg / (15 mg/mL) = 1.173 mL, which rounds to 1.2mL when rounded to the
nearest tenth.
Question 2: V 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.) Explanation
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.
Question 3: 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
7.5 mL is equivalent to 1.5 tsp.
To calculate this, use the conversion factor that 1 tsp is equivalent to 5 mL. So, 7.5 mL * (1 tsp /
5 mL) = 1.5 tsp.
Question 4: View
A nurse is preparing to administer dextrose 5% in 0.9% sodium chloride 125 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
To calculate this, first convert the infusion time from minutes
, to hours: 15 min * (1 hr / 60 min) = 0.25 hr.
Then, divide the volume of the infusion by the infusion time to
find the rate: 125 mL / 0.25 hr = 500 mL/hr.
Question 5: View
A nurse is preparing to administer dextrose 5% in water 800 mL IV to infuse over 6 hr to an
adolescent client. 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
To calculate this, divide the volume of the infusion by the
infusion time to find the rate: 800 mL / 6 hr =
133.33 mL/hr, which rounds to 133 mL/hr when rounded to
the nearest whole number.
Question 6: View
A nurse is preparing to administer morphine 0.1 mg/kg IV bolus every 3 to 4 hr PRN for pain
to a school-age child who weighs 51 lb. Available is morphine injection 2 mg/mL. How
many mL should the nurse administer per dose? (Round the answer to the nearest tenth.
Use a leading zero if it applies. Do not use a trailing zero.) Explanation
Step 1 is to convert the child’s weight from pounds to kilograms since the dosage of morphine is
prescribed in mg/kg. We know that 1 kg is approximately equal to 2.2 lb. So, the child’s weight
in kg is:
51 lb ÷ 2.2 = 23.18 kg
Step 2 is to calculate the total amount of morphine the child
should receive per dose. The doctor ordered 0.1 mg of
morphine per kg of body weight. So, the total amount of
morphine per dose is:
0.1 mg/kg × 23.18 kg = 2.318 mg
Step 3 is to calculate the volume of morphine injection to be administered. We know that the
available morphine injection has a concentration of 2 mg/mL. So, the volume in mL is:
2.318 mg ÷ (2 mg/mL) = 1.159 mL
Rounding this to the nearest tenth gives 1.2 mL. So, the nurse
