ATI DOSAGE CALCULATION RN MATERNAL NEWBORN
ELABORATIONS -EXAM QUESTIONS AND ANSWERS | ACCURATE
AND WELL DETAILED | COMPLETE GUIDE & RATIONALES | A+
MATERIAL | NEWEST UPDATE
Core Domains:
1. Oral and Enteral Medication Administration in Antepartum and
Postpartum Care
2. Intravenous Infusion Calculations and Titrations for Labor and
Delivery
3. Neonatal and Pediatric Weight-Based Dosage Calculations
4. High-Risk Obstetric Pharmacological Dosing and Safety Protocols
5. Intravenous Flow Rates and Pump Programming for Fluid
Resuscitation
6. Electrolyte and Replacement Therapy Calculations in Newborns
7. Uterotonic Infusion Rate Computations and Safety Monitoring
Introduction:
This comprehensive examination is designed to evaluate professional
nursing competency in dosage calculation specifically tailored for
maternal-newborn clinical practice. The assessment rigorously tests
essential skills including metric conversions, intravenous flow rates,
weight-based neonatal dosages, and high-risk obstetric medication
titrations. Featuring a rigorous multiple-choice and scenario-based
structure, the exam emphasizes real-world clinical application, patient
safety, and sound pharmacological decision-making. Nurses will
demonstrate their ability to prevent medication errors, accurately interpret
complex clinical orders, and execute precise mathematical computations
in fast-paced maternal and neonatal healthcare environments.
SECTION 1: QUESTIONS 1 TO 20
Question 1
A nurse is preparing to administer oxytocin (Pitocin) 2 milliunits/min IV to
a client who is at 40 weeks of gestation for labor induction. The available
solution is oxytocin 20 units in 500 mL of lactated Ringer's. The nurse
should calculate the infusion rate to be set on the IV pump in mL/hr.
, A. 1.5 mL/hr
B. 3 mL/hr
C. 6 mL/hr
D. 12 mL/hr
🟢 C. 6 mL/hr
🔴 Explanation: First, convert units to milliunits: 20 units = 20,000
milliunits. Calculate the concentration: 20,000 milliunits / 500 mL = 40
milliunits/mL. Next, use the formula (Desired / Have) x Volume, or set up
the ratio: (2 milliunits/min / 40 milliunits/mL) x 60 min/hr = 3 mL/min? Wait,
let's recalculate: (2 milliunits/min) / (40 milliunits/mL) = 0.05 mL/min.
Multiply by 60 min/hr = 3 mL/hr. Let's re-verify: 2 units = 2,000 milliunits?
No, 1 unit = 1,000 milliunits, so 20 units = 20,000 milliunits. 20,000 units /
500 mL = 40 milliunits/mL. Desired dose is 2 milliunits/min. = 0.05
mL/min. 0.05 x 60 = 3 mL/hr. Wait, let's check option B. Option B is 3
mL/hr. Let's ensure option B is marked correctly if it's 3. Let's re-read
option B: B. 3 mL/hr. Correct answer is B. Let's fix the option letter to B.
Correction for Question 1:
A. 1.5 mL/hr
🟢 B. 3 mL/hr
C. 6 mL/hr
D. 12 mL/hr
🔴 Explanation: Calculate the concentration of the solution: 20 units
(20,000 milliunits) in 500 mL equals 40 milliunits/mL. Using dimensional
analysis or formula: (Desired dose / Concentration) x 60 min/hr = (2
milliunits/min / 40 milliunits/mL) x 60 min/hr = 0.05 x 60 = 3 mL/hr.
Question 2
A newborn infant weighs 3,200 g. The pediatrician prescribes vitamin K 1
mg IM given as a single dose immediately after birth. The available
medication is phytonadione 1 mg/0.5 mL. How many mL should the nurse
administer?
A. 0.25 mL
B. 0.5 mL
C. 1 mL
D. 2 mL
🟢 B. 0.5 mL
🔴 Explanation: Using the formula (Desired / Have) x Volume: (1 mg / 1
mg) x 0.5 mL = 0.5 mL. The newborn weight is extraneous information
ELABORATIONS -EXAM QUESTIONS AND ANSWERS | ACCURATE
AND WELL DETAILED | COMPLETE GUIDE & RATIONALES | A+
MATERIAL | NEWEST UPDATE
Core Domains:
1. Oral and Enteral Medication Administration in Antepartum and
Postpartum Care
2. Intravenous Infusion Calculations and Titrations for Labor and
Delivery
3. Neonatal and Pediatric Weight-Based Dosage Calculations
4. High-Risk Obstetric Pharmacological Dosing and Safety Protocols
5. Intravenous Flow Rates and Pump Programming for Fluid
Resuscitation
6. Electrolyte and Replacement Therapy Calculations in Newborns
7. Uterotonic Infusion Rate Computations and Safety Monitoring
Introduction:
This comprehensive examination is designed to evaluate professional
nursing competency in dosage calculation specifically tailored for
maternal-newborn clinical practice. The assessment rigorously tests
essential skills including metric conversions, intravenous flow rates,
weight-based neonatal dosages, and high-risk obstetric medication
titrations. Featuring a rigorous multiple-choice and scenario-based
structure, the exam emphasizes real-world clinical application, patient
safety, and sound pharmacological decision-making. Nurses will
demonstrate their ability to prevent medication errors, accurately interpret
complex clinical orders, and execute precise mathematical computations
in fast-paced maternal and neonatal healthcare environments.
SECTION 1: QUESTIONS 1 TO 20
Question 1
A nurse is preparing to administer oxytocin (Pitocin) 2 milliunits/min IV to
a client who is at 40 weeks of gestation for labor induction. The available
solution is oxytocin 20 units in 500 mL of lactated Ringer's. The nurse
should calculate the infusion rate to be set on the IV pump in mL/hr.
, A. 1.5 mL/hr
B. 3 mL/hr
C. 6 mL/hr
D. 12 mL/hr
🟢 C. 6 mL/hr
🔴 Explanation: First, convert units to milliunits: 20 units = 20,000
milliunits. Calculate the concentration: 20,000 milliunits / 500 mL = 40
milliunits/mL. Next, use the formula (Desired / Have) x Volume, or set up
the ratio: (2 milliunits/min / 40 milliunits/mL) x 60 min/hr = 3 mL/min? Wait,
let's recalculate: (2 milliunits/min) / (40 milliunits/mL) = 0.05 mL/min.
Multiply by 60 min/hr = 3 mL/hr. Let's re-verify: 2 units = 2,000 milliunits?
No, 1 unit = 1,000 milliunits, so 20 units = 20,000 milliunits. 20,000 units /
500 mL = 40 milliunits/mL. Desired dose is 2 milliunits/min. = 0.05
mL/min. 0.05 x 60 = 3 mL/hr. Wait, let's check option B. Option B is 3
mL/hr. Let's ensure option B is marked correctly if it's 3. Let's re-read
option B: B. 3 mL/hr. Correct answer is B. Let's fix the option letter to B.
Correction for Question 1:
A. 1.5 mL/hr
🟢 B. 3 mL/hr
C. 6 mL/hr
D. 12 mL/hr
🔴 Explanation: Calculate the concentration of the solution: 20 units
(20,000 milliunits) in 500 mL equals 40 milliunits/mL. Using dimensional
analysis or formula: (Desired dose / Concentration) x 60 min/hr = (2
milliunits/min / 40 milliunits/mL) x 60 min/hr = 0.05 x 60 = 3 mL/hr.
Question 2
A newborn infant weighs 3,200 g. The pediatrician prescribes vitamin K 1
mg IM given as a single dose immediately after birth. The available
medication is phytonadione 1 mg/0.5 mL. How many mL should the nurse
administer?
A. 0.25 mL
B. 0.5 mL
C. 1 mL
D. 2 mL
🟢 B. 0.5 mL
🔴 Explanation: Using the formula (Desired / Have) x Volume: (1 mg / 1
mg) x 0.5 mL = 0.5 mL. The newborn weight is extraneous information
