Answers & Detailed Rationales (Updated 2026) | Prenatal Care &
High-Risk Pregnancy, Labor & Delivery Stages, Fetal Heart Monitoring,
Obstetric Emergencies, Postpartum Recovery, Newborn Assessment &
Safety, Maternal-Newborn Pharmacology, Breastfeeding Support, NCLEX-
Style Clinical Judgment & ATI Review
Question 1: A nurse is assessing a client at 32 weeks' gestation who reports
sudden, painless, bright red vaginal bleeding. Which condition should the nurse
suspect as the priority concern?
A. Placental abruption
B. Preterm labor
C. Placenta previa
D. Cervical polyp
CORRECT ANSWER: C. Placenta previa
Rationale: Painless, bright red vaginal bleeding in the third trimester is the classic
presentation of placenta previa, where the placenta implants over or near the cervical
os. Placental abruption typically presents with painful, dark red bleeding and uterine
tenderness. Preterm labor involves regular contractions with cervical change. While
cervical polyps can cause bleeding, they are not the priority life-threatening concern in
this scenario. Immediate assessment and avoidance of vaginal examinations are
critical to prevent hemorrhage
www.naxlex.com
.
Question 2: A nurse is caring for a newborn 1 hour after birth. Which assessment
finding requires immediate intervention?
A. Acrocyanosis of hands and feet
B. Respiratory rate of 58 breaths/min with brief apical pauses <10 seconds
C. Central cyanosis of the lips and trunk
D. Heart rate of 142 beats/min with regular rhythm
CORRECT ANSWER: C. Central cyanosis of the lips and trunk
Rationale: Central cyanosis (bluish discoloration of the lips, tongue, or trunk) indicates
inadequate oxygenation and requires immediate assessment of airway, breathing, and
circulation. Acrocyanosis (peripheral cyanosis of extremities) is normal in the first 24-48
hours due to immature peripheral circulation. A respiratory rate of 50-60 breaths/min
with brief, irregular pauses (periodic breathing) is expected in newborns. A heart rate of
110-160 beats/min is within normal limits
nurseclex.com
, .
Question 3: A nurse is preparing to administer vitamin K to a newborn. The parent
asks why this injection is necessary. Which response by the nurse is most
accurate?
A. "Vitamin K prevents jaundice by helping the liver process bilirubin."
B. "Newborns lack intestinal bacteria to produce vitamin K, putting them at risk for
hemorrhagic disease."
C. "This injection boosts the newborn's immune system to prevent infection."
D. "Vitamin K helps the newborn absorb calcium for bone development."
CORRECT ANSWER: B. "Newborns lack intestinal bacteria to produce vitamin K,
putting them at risk for hemorrhagic disease."
Rationale: Newborns are born with sterile intestines and lack the gut flora needed to
synthesize vitamin K, which is essential for clotting factor production (II, VII, IX, X).
Without prophylactic vitamin K administration, newborns are at risk for vitamin K
deficiency bleeding (VKDB), formerly called hemorrhagic disease of the newborn.
Vitamin K does not prevent jaundice, boost immunity, or aid calcium absorption
www.scribd.com
.
Question 4: A nurse is monitoring a client in active labor receiving oxytocin via IV
infusion. The fetal heart rate shows late decelerations. Which action should the
nurse take first?
A. Increase the IV fluid rate
B. Administer oxygen via nonrebreather mask at 10 L/min
C. Discontinue the oxytocin infusion
D. Reposition the client to a left lateral position
CORRECT ANSWER: D. Reposition the client to a left lateral position
Rationale: The priority action for late decelerations (indicating uteroplacental
insufficiency) is to improve uterine blood flow and fetal oxygenation. Repositioning to
left lateral position relieves aortocaval compression and is the fastest, least invasive
intervention. While discontinuing oxytocin, administering oxygen, and increasing IV
fluids are also appropriate, repositioning is initiated first while simultaneously preparing
for subsequent actions. This follows the nursing process: assess and intervene with the
most immediate, non-invasive measure
www.naxlex.com
.