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Comprehensive review for HESI OB Practice Exam 2025
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Over 70 expert-rated questions with correct answers
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Detailed rationales for better understanding
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Focuses on obstetrics concepts for RN candidates
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Ensures confidence for top exam success
Preview
Question: An infant in respiratory distress is on pulse oximetry with O₂ sat of 85%. What is
the priority nursing intervention?
A. Evaluate the blood pH
B. Begin humidified oxygen via hood ✅
C. Place under a radiant warmer
D. Stimulate crying
Correct Answer: B. Begin humidified oxygen via hood
Rationale: An O₂ saturation of 85% is below the acceptable range for newborns.
Immediate oxygen support is needed to improve oxygenation and prevent hypoxic injury.
Question: When assessing a newborn’s heart rate, which technique is most important?
A. Count the heart rate for at least one full minute ✅
B. Quiet the infant first
C. Palpate the umbilical cord
D. Listen at the apex
Correct Answer: A. Count the heart rate for at least one full minute
Rationale: A full minute count is necessary due to the variability in newborn heart rates,
especially right after birth.
Question: A mother refuses a vitamin K injection for her newborn. What is the best nursing
response?
A. It was prescribed by the provider
B. Explore the mother’s concerns ✅
C. Remind her it’s painless
D. Say it’s mandatory by law
Correct Answer: B. Explore the mother’s concerns
Rationale: A therapeutic, client-centered approach involves understanding the mother’s
reasoning and providing evidence-based education to address fears.
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