DOSAGE CALCULATION RN MATERNAL
NEWBORN PROCTORED ASSESSMENT
3.1 EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2026 Q&A | INSTANT
DOWNLOAD PDF
Core Domains
• Obstetric Medication Administration
• Intravenous Infusion Rate Calculations
• Weight-Based Neonatal and Maternal Dosing
• Postpartum and Antepartum Pharmacology
• Safe Dosage Range and Therapeutic Monitoring
• Maternal-Newborn Fluid and Electrolyte Management
• High-Alert Medication Safety (Oxytocin, Magnesium Sulfate, Heparin)
• Pediatric/Neonatal Medication Calculations
Introduction
This comprehensive assessment is designed to evaluate the nursing student's
proficiency in dosage calculations specific to maternal-newborn care. The
examination covers essential skills including intravenous infusion rate
determination, weight-based medication dosing for both mothers and
neonates, and safe administration of high-alert obstetric medications. Through
a combination of multiple-choice questions and clinical scenarios, this
assessment emphasizes real-world application and clinical decision-making.
Candidates will demonstrate their ability to accurately calculate medication
,dosages, interpret provider orders, and apply safety principles in the dynamic
maternal-newborn healthcare setting. Mastery of these calculations is
fundamental to ensuring patient safety and positive maternal-fetal outcomes.
SECTION ONE: QUESTIONS 1–100
1. A nurse is preparing to administer oxytocin (Pitocin) 10 units in 1,000
mL of 0.9% sodium chloride to a client in active labor. The prescription
is to infuse at 6 milliunits/min. How many mL/hr should the nurse set
the IV pump to deliver?
A. 12 mL/hr
B. 24 mL/hr
C. 36 mL/hr
D. 48 mL/hr
Correct answer: C
RATIONALE: First, calculate the concentration: 10 units/1,000 mL = 0.01
units/mL = 10 milliunits/mL. Then, use the formula: (6 milliunits/min × 60
min/hr) ÷ 10 milliunits/mL = 360 ÷ 10 = 36 mL/hr.
2. A newborn weighs 3.2 kg. The provider orders ampicillin 100
mg/kg/day divided every 12 hours. How many mg should the nurse
administer per dose?
A. 160 mg
B. 200 mg
C. 320 mg
D. 80 mg
Correct answer: A
RATIONALE: Calculate the total daily dose: 3.2 kg × 100 mg/kg/day = 320
mg/day. Divide by 2 doses per day (every 12 hours): 320 mg ÷ 2 = 160 mg per
dose.
,3. A nurse is preparing to administer magnesium sulfate 4 g IV bolus
over 20 minutes for a client with preeclampsia. The medication is
available as magnesium sulfate 40 g in 1,000 mL of lactated Ringer's.
How many mL/hr should the nurse set the IV pump to deliver?
A. 200 mL/hr
B. 150 mL/hr
C. 300 mL/hr
D. 100 mL/hr
Correct answer: C
RATIONALE: First, calculate the concentration: 40 g/1,000 mL = 0.04
g/mL. To deliver 4 g, the volume needed is 4 g ÷ 0.04 g/mL = 100 mL. To
infuse 100 mL over 20 minutes, the rate is 100 mL × (60 min/20 min) = 300
mL/hr.
4. A nurse is caring for a newborn who weighs 6 lb. How many grams
should the nurse record as the newborn's weight? (Round to the
nearest whole number.)
A. 2,722 g
B. 2,500 g
C. 3,000 g
D. 2,800 g
Correct answer: A
RATIONALE: Convert pounds to grams using the conversion factor: 1 kg =
2.2 lb. 6 lb ÷ 2.2 = 2.727 kg. Then multiply by 1,000: 2.727 × 1,000 = 2,727 g,
rounded to 2,722 g (using 1 lb = 454 g: 6 × 454 = 2,724 g, closest option is 2,722
g).
5. A nurse is preparing to administer enoxaparin 55 mg subcutaneous to
a postpartum client who has a deep-vein thrombosis. Available is
enoxaparin 120 mg/0.8 mL. How many mL should the nurse
administer? (Round to the nearest tenth.)
, A. 0.3 mL
B. 0.4 mL
C. 0.5 mL
D. 0.6 mL
Correct answer: B
RATIONALE: Use the formula: Desired dose ÷ Available dose × Volume =
55 mg ÷ 120 mg × 0.8 mL = 0.4583 × 0.8 = 0.366 mL. Rounded to the nearest
tenth = 0.4 mL.
6. A nurse is preparing to administer acetaminophen 56 mg PO to a
newborn. Available is acetaminophen oral solution 160 mg/5 mL. How
many mL should the nurse administer?
A. 1.5 mL
B. 1.75 mL
C. 2 mL
D. 2.25 mL
Correct answer: B
RATIONALE: Use the formula: (Desired dose ÷ Available dose) × Volume
= (56 mg ÷ 160 mg) × 5 mL = 0.35 × 5 = 1.75 mL.
7. A nurse is preparing to administer 0.9% sodium chloride 1,000 mL IV
to infuse over 6 hours. How many mL/hr should the nurse set the IV
infusion pump to deliver?
A. 125 mL/hr
B. 150 mL/hr
C. 167 mL/hr
D. 200 mL/hr
Correct answer: C
RATIONALE: Use the formula: Total volume ÷ Total time = 1,000 mL ÷ 6
hours = 166.67 mL/hr, rounded to 167 mL/hr.
NEWBORN PROCTORED ASSESSMENT
3.1 EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2026 Q&A | INSTANT
DOWNLOAD PDF
Core Domains
• Obstetric Medication Administration
• Intravenous Infusion Rate Calculations
• Weight-Based Neonatal and Maternal Dosing
• Postpartum and Antepartum Pharmacology
• Safe Dosage Range and Therapeutic Monitoring
• Maternal-Newborn Fluid and Electrolyte Management
• High-Alert Medication Safety (Oxytocin, Magnesium Sulfate, Heparin)
• Pediatric/Neonatal Medication Calculations
Introduction
This comprehensive assessment is designed to evaluate the nursing student's
proficiency in dosage calculations specific to maternal-newborn care. The
examination covers essential skills including intravenous infusion rate
determination, weight-based medication dosing for both mothers and
neonates, and safe administration of high-alert obstetric medications. Through
a combination of multiple-choice questions and clinical scenarios, this
assessment emphasizes real-world application and clinical decision-making.
Candidates will demonstrate their ability to accurately calculate medication
,dosages, interpret provider orders, and apply safety principles in the dynamic
maternal-newborn healthcare setting. Mastery of these calculations is
fundamental to ensuring patient safety and positive maternal-fetal outcomes.
SECTION ONE: QUESTIONS 1–100
1. A nurse is preparing to administer oxytocin (Pitocin) 10 units in 1,000
mL of 0.9% sodium chloride to a client in active labor. The prescription
is to infuse at 6 milliunits/min. How many mL/hr should the nurse set
the IV pump to deliver?
A. 12 mL/hr
B. 24 mL/hr
C. 36 mL/hr
D. 48 mL/hr
Correct answer: C
RATIONALE: First, calculate the concentration: 10 units/1,000 mL = 0.01
units/mL = 10 milliunits/mL. Then, use the formula: (6 milliunits/min × 60
min/hr) ÷ 10 milliunits/mL = 360 ÷ 10 = 36 mL/hr.
2. A newborn weighs 3.2 kg. The provider orders ampicillin 100
mg/kg/day divided every 12 hours. How many mg should the nurse
administer per dose?
A. 160 mg
B. 200 mg
C. 320 mg
D. 80 mg
Correct answer: A
RATIONALE: Calculate the total daily dose: 3.2 kg × 100 mg/kg/day = 320
mg/day. Divide by 2 doses per day (every 12 hours): 320 mg ÷ 2 = 160 mg per
dose.
,3. A nurse is preparing to administer magnesium sulfate 4 g IV bolus
over 20 minutes for a client with preeclampsia. The medication is
available as magnesium sulfate 40 g in 1,000 mL of lactated Ringer's.
How many mL/hr should the nurse set the IV pump to deliver?
A. 200 mL/hr
B. 150 mL/hr
C. 300 mL/hr
D. 100 mL/hr
Correct answer: C
RATIONALE: First, calculate the concentration: 40 g/1,000 mL = 0.04
g/mL. To deliver 4 g, the volume needed is 4 g ÷ 0.04 g/mL = 100 mL. To
infuse 100 mL over 20 minutes, the rate is 100 mL × (60 min/20 min) = 300
mL/hr.
4. A nurse is caring for a newborn who weighs 6 lb. How many grams
should the nurse record as the newborn's weight? (Round to the
nearest whole number.)
A. 2,722 g
B. 2,500 g
C. 3,000 g
D. 2,800 g
Correct answer: A
RATIONALE: Convert pounds to grams using the conversion factor: 1 kg =
2.2 lb. 6 lb ÷ 2.2 = 2.727 kg. Then multiply by 1,000: 2.727 × 1,000 = 2,727 g,
rounded to 2,722 g (using 1 lb = 454 g: 6 × 454 = 2,724 g, closest option is 2,722
g).
5. A nurse is preparing to administer enoxaparin 55 mg subcutaneous to
a postpartum client who has a deep-vein thrombosis. Available is
enoxaparin 120 mg/0.8 mL. How many mL should the nurse
administer? (Round to the nearest tenth.)
, A. 0.3 mL
B. 0.4 mL
C. 0.5 mL
D. 0.6 mL
Correct answer: B
RATIONALE: Use the formula: Desired dose ÷ Available dose × Volume =
55 mg ÷ 120 mg × 0.8 mL = 0.4583 × 0.8 = 0.366 mL. Rounded to the nearest
tenth = 0.4 mL.
6. A nurse is preparing to administer acetaminophen 56 mg PO to a
newborn. Available is acetaminophen oral solution 160 mg/5 mL. How
many mL should the nurse administer?
A. 1.5 mL
B. 1.75 mL
C. 2 mL
D. 2.25 mL
Correct answer: B
RATIONALE: Use the formula: (Desired dose ÷ Available dose) × Volume
= (56 mg ÷ 160 mg) × 5 mL = 0.35 × 5 = 1.75 mL.
7. A nurse is preparing to administer 0.9% sodium chloride 1,000 mL IV
to infuse over 6 hours. How many mL/hr should the nurse set the IV
infusion pump to deliver?
A. 125 mL/hr
B. 150 mL/hr
C. 167 mL/hr
D. 200 mL/hr
Correct answer: C
RATIONALE: Use the formula: Total volume ÷ Total time = 1,000 mL ÷ 6
hours = 166.67 mL/hr, rounded to 167 mL/hr.
