, ATI Dosage Calculations and Nursing Care of Children 3.1
EXAM with Questions and Answers/Plus a Rationale Updated
2026 A+/Instant Download PDF
EXAM COVERAGE
1. Pediatric Pharmacokinetics and Pharmacodynamics
2. Weight-Based Dosage Calculations and BSA Formulas
3. Safe Medication Administration Routes and Techniques (Oral, Enteral, Parenteral)
4. Fluid, Electrolyte, and IV Infusion Rate Calculations
5. High-Risk Medication Safety (Insulin, Heparin, Opioids, Chemotherapy)
6. Growth, Development, and Pediatric Assessment Parameters
7. Cardiovascular and Respiratory Disorders Management
8. Endocrine, Neurological, and Gastrointestinal Disorders
9. Renal, Genitourinary, and Musculoskeletal Conditions
10. Pediatric Emergency Management and Toxicities
1. A nurse is preparing to administer digoxin elixir to an infant diagnosed with a congenital heart
defect. The prescribed dose is 25 mcg PO twice daily. The available medication is digoxin
pediatric elixir 50 mcg/mL. Using a tuberculin syringe, how many mL should the nurse
administer per dose?
A. 0.25 mL
B. 0.5 mL
, C. 1 mL
D. 2 mL
CORRECT ANSWER : B
Rationale: To find the correct volume, use the formula (Desired / Stock) x Quantity. Substituting
the values yields (25 mcg / 50 mcg) x 1 mL = 0.5 mL. Options A, C, and D reflect math errors in
proportional scaling and would result in an incorrect, unsafe dosage delivery.
2. A pediatric nurse receives an order to administer furosemide 1 mg/kg/dose IV to a toddler
weighing 24 lb. Available is furosemide injection 10 mg/mL. What is the weight in kg, and how
many mL should the nurse administer? (Round weight to the nearest tenth and volume to the
nearest hundredth).
A. 10.5 kg and 1.05 mL
B. 10.9 kg and 1.09 mL
C. 11.2 kg and 1.12 mL
D. 12.0 kg and 1.20 mL
CORRECT ANSWER : B
Rationale: First, convert pounds to kilograms by dividing 24 by 2.2046, yielding 10.886 kg,
which rounds to 10.9 kg. Next, multiply by the ordered dose (1 mg x 10.9 kg = 10.9 mg), then
divide by the concentration (10.9 mg / 10 mg/mL = 1.09 mL). Options A, C, and D use incorrect
conversion factors or calculation steps.
3. A nurse is caring for an 8-year-old child experiencing status asthmaticus. The physician
prescribes a continuous intravenous infusion of aminophylline. The child weighs 60 lb, and the
recommended maintenance dosage is 0.8 mg/kg/hr. What is the hourly infusion rate in mg/hr?
A. 18.2 mg/hr
B. 20.5 mg/hr
C. 21.8 mg/hr
D. 24.0 mg/hr
CORRECT ANSWER : C
, Rationale: Convert the child's weight to kilograms: 60 lb / 2.2 = 27.27 kg. Multiply by the hourly
dosage rate: 27.27 kg x 0.8 mg/kg/hr = 21.81 mg/hr, which rounds to 21.8 mg/hr. Options A, B,
and D result from incorrect weight conversions or arithmetic errors.
4. A nurse needs to calculate the 24-hour maintenance fluid requirement for a child weighing 34 kg
using the standard Holliday-Segar method. What is the total volume of fluid the child requires in
24 hours?
A. 1500 mL
B. 1700 mL
C. 1740 mL
D. 1880 mL
CORRECT ANSWER : C
Rationale: For the Holliday-Segar method, calculate 100 mL/kg for the first 10 kg (1000 mL), 50
mL/kg for the next 10 kg (500 mL), and 20 mL/kg for each remaining kg. The remaining weight is
14 kg x 20 mL = 280 mL; summing these gives 1000 + 500 + 280 = 1740 mL. Options A, B, and
D miscalculate the tiered caloric/fluid calculation tiers.
5. An infant with severe dehydration is prescribed an initial IV fluid bolus of isotonic normal saline
at 20 mL/kg over 20 minutes. The infant's admission weight is 16 lb 8 oz. What total volume of
normal saline should the nurse infuse?
A. 120 mL
B. 135 mL
C. 150 mL
D. 165 mL
CORRECT ANSWER : C
Rationale: Convert 16 lb 8 oz to kilograms: 16.5 lb / 2.2 = 7.5 kg. Multiply by the bolus rate of
20 mL/kg, yielding 7.5 x 20 = 150 mL. Options A, B, and D fail to correctly convert ounces to
decimal pounds or miscalculate the multiplication factor.
6. A school-age child with type 1 diabetes mellitus is prescribed regular insulin via continuous IV
infusion at 0.1 units/kg/hr. The child weighs 30 kg. The IV bag contains regular human insulin
100 units in 100 mL of 0.9% sodium chloride. What is the correct infus ion rate in mL/hr?
A. 3 mL/hr
EXAM with Questions and Answers/Plus a Rationale Updated
2026 A+/Instant Download PDF
EXAM COVERAGE
1. Pediatric Pharmacokinetics and Pharmacodynamics
2. Weight-Based Dosage Calculations and BSA Formulas
3. Safe Medication Administration Routes and Techniques (Oral, Enteral, Parenteral)
4. Fluid, Electrolyte, and IV Infusion Rate Calculations
5. High-Risk Medication Safety (Insulin, Heparin, Opioids, Chemotherapy)
6. Growth, Development, and Pediatric Assessment Parameters
7. Cardiovascular and Respiratory Disorders Management
8. Endocrine, Neurological, and Gastrointestinal Disorders
9. Renal, Genitourinary, and Musculoskeletal Conditions
10. Pediatric Emergency Management and Toxicities
1. A nurse is preparing to administer digoxin elixir to an infant diagnosed with a congenital heart
defect. The prescribed dose is 25 mcg PO twice daily. The available medication is digoxin
pediatric elixir 50 mcg/mL. Using a tuberculin syringe, how many mL should the nurse
administer per dose?
A. 0.25 mL
B. 0.5 mL
, C. 1 mL
D. 2 mL
CORRECT ANSWER : B
Rationale: To find the correct volume, use the formula (Desired / Stock) x Quantity. Substituting
the values yields (25 mcg / 50 mcg) x 1 mL = 0.5 mL. Options A, C, and D reflect math errors in
proportional scaling and would result in an incorrect, unsafe dosage delivery.
2. A pediatric nurse receives an order to administer furosemide 1 mg/kg/dose IV to a toddler
weighing 24 lb. Available is furosemide injection 10 mg/mL. What is the weight in kg, and how
many mL should the nurse administer? (Round weight to the nearest tenth and volume to the
nearest hundredth).
A. 10.5 kg and 1.05 mL
B. 10.9 kg and 1.09 mL
C. 11.2 kg and 1.12 mL
D. 12.0 kg and 1.20 mL
CORRECT ANSWER : B
Rationale: First, convert pounds to kilograms by dividing 24 by 2.2046, yielding 10.886 kg,
which rounds to 10.9 kg. Next, multiply by the ordered dose (1 mg x 10.9 kg = 10.9 mg), then
divide by the concentration (10.9 mg / 10 mg/mL = 1.09 mL). Options A, C, and D use incorrect
conversion factors or calculation steps.
3. A nurse is caring for an 8-year-old child experiencing status asthmaticus. The physician
prescribes a continuous intravenous infusion of aminophylline. The child weighs 60 lb, and the
recommended maintenance dosage is 0.8 mg/kg/hr. What is the hourly infusion rate in mg/hr?
A. 18.2 mg/hr
B. 20.5 mg/hr
C. 21.8 mg/hr
D. 24.0 mg/hr
CORRECT ANSWER : C
, Rationale: Convert the child's weight to kilograms: 60 lb / 2.2 = 27.27 kg. Multiply by the hourly
dosage rate: 27.27 kg x 0.8 mg/kg/hr = 21.81 mg/hr, which rounds to 21.8 mg/hr. Options A, B,
and D result from incorrect weight conversions or arithmetic errors.
4. A nurse needs to calculate the 24-hour maintenance fluid requirement for a child weighing 34 kg
using the standard Holliday-Segar method. What is the total volume of fluid the child requires in
24 hours?
A. 1500 mL
B. 1700 mL
C. 1740 mL
D. 1880 mL
CORRECT ANSWER : C
Rationale: For the Holliday-Segar method, calculate 100 mL/kg for the first 10 kg (1000 mL), 50
mL/kg for the next 10 kg (500 mL), and 20 mL/kg for each remaining kg. The remaining weight is
14 kg x 20 mL = 280 mL; summing these gives 1000 + 500 + 280 = 1740 mL. Options A, B, and
D miscalculate the tiered caloric/fluid calculation tiers.
5. An infant with severe dehydration is prescribed an initial IV fluid bolus of isotonic normal saline
at 20 mL/kg over 20 minutes. The infant's admission weight is 16 lb 8 oz. What total volume of
normal saline should the nurse infuse?
A. 120 mL
B. 135 mL
C. 150 mL
D. 165 mL
CORRECT ANSWER : C
Rationale: Convert 16 lb 8 oz to kilograms: 16.5 lb / 2.2 = 7.5 kg. Multiply by the bolus rate of
20 mL/kg, yielding 7.5 x 20 = 150 mL. Options A, B, and D fail to correctly convert ounces to
decimal pounds or miscalculate the multiplication factor.
6. A school-age child with type 1 diabetes mellitus is prescribed regular insulin via continuous IV
infusion at 0.1 units/kg/hr. The child weighs 30 kg. The IV bag contains regular human insulin
100 units in 100 mL of 0.9% sodium chloride. What is the correct infus ion rate in mL/hr?
A. 3 mL/hr
