POEP Module 11 Newborn Transition to
Extrauterine Life Practice Examination,
Association of Women’s Health, Obstetric and
Neonatal Nurses (AWHONN), 2026/2027 –
Perinatal Nursing Practice Exam
Part 1: Normal Respiratory and Cardiovascular
Transition (Q1–Q10)
Q1. The most critical event in a newborn’s transition to extrauterine
life is:
A. Initiation of thermoregulation
B. Establishment of air breathing and lung expansion
C. First breastfeeding
D. Passage of meconium
Answer: B
Rationale: The most critical transition is the switch from placental gas
exchange to pulmonary respiration. With the first breath, air enters the
lungs, fluid is cleared, pulmonary vascular resistance drops, and gas
exchange begins.
Q2. The foramen ovale functionally closes after birth due to:
A. Increased pressure in the left atrium
B. Increased pressure in the right atrium
C. Clamping of the umbilical cord
D. The first cry
,Answer: A
Rationale: After birth, pulmonary blood flow increases, returning oxygenated
blood to the left atrium. This increased left atrial pressure pushes the septum
primum against the septum secundum, functionally closing the foramen
ovale. Anatomic closure occurs later (months).
Q3. Shortly after birth, which shunt should shunt right-to-left (fetal
circulation) but closes functionally within the first few hours of life
as the lungs expand?
A. Ductus venosus
B. Patent foramen ovale
C. Ductus arteriosus
D. Umbilical arteries
Answer: C
Rationale: The ductus arteriosus connects the pulmonary artery to the aorta.
After birth, increased oxygen tension causes the ductus arteriosus to
constrict, functionally closing within 10-15 hours. It may remain patent (PDA)
in preterm infants.
Q4. What is the primary stimulus for the first breath in a term
newborn?
A. Cold stress
B. Tactile stimulation
C. Chemical changes (decreased PaO₂, increased PaCO₂, decreased pH)
D. Light.
Answer: C
Rationale: Chemical factors (hypoxia, hypercapnia, acidosis) stimulate the
respiratory center in the medulla after cord clamping. Other stimuli (cold,
touch) are secondary, but chemical drive is primary.
, Q5. What happens to pulmonary vascular resistance (PVR)
immediately after birth?
A. Dramatically increases
B. Dramatically decreases
C. Remains the same as in utero
D. Increases temporarily
Answer: B
Rationale: Lung expansion and increased oxygen tension cause PVR to drop
dramatically. This reduces right ventricular afterload and increases
pulmonary blood flow.
Q6. The ductus venosus functionally closes shortly after birth due
to:
A. Increased systemic vascular resistance
B. Cessation of umbilical blood flow and clamping of the cord
C. Decreased oxygen tension
D. Prostaglandin release
Answer: B
Rationale: Clamping the umbilical cord stops flow from the placenta, causing
the ductus venosus to close within minutes to hours. The remnant is the
ligamentum venosum.
Q7. After birth, the newborn’s heart rate is primarily driven by the:
A. Sympathetic nervous system
B. Parasympathetic nervous system (vagal tone)
C. Adrenal medulla
D. Renin-angiotensin system
Answer: B
Rationale: At birth, the parasympathetic nervous system (vagal tone)
predominates, making the newborn susceptible to bradycardia with stimuli
such as suctioning or hypoxia.
Extrauterine Life Practice Examination,
Association of Women’s Health, Obstetric and
Neonatal Nurses (AWHONN), 2026/2027 –
Perinatal Nursing Practice Exam
Part 1: Normal Respiratory and Cardiovascular
Transition (Q1–Q10)
Q1. The most critical event in a newborn’s transition to extrauterine
life is:
A. Initiation of thermoregulation
B. Establishment of air breathing and lung expansion
C. First breastfeeding
D. Passage of meconium
Answer: B
Rationale: The most critical transition is the switch from placental gas
exchange to pulmonary respiration. With the first breath, air enters the
lungs, fluid is cleared, pulmonary vascular resistance drops, and gas
exchange begins.
Q2. The foramen ovale functionally closes after birth due to:
A. Increased pressure in the left atrium
B. Increased pressure in the right atrium
C. Clamping of the umbilical cord
D. The first cry
,Answer: A
Rationale: After birth, pulmonary blood flow increases, returning oxygenated
blood to the left atrium. This increased left atrial pressure pushes the septum
primum against the septum secundum, functionally closing the foramen
ovale. Anatomic closure occurs later (months).
Q3. Shortly after birth, which shunt should shunt right-to-left (fetal
circulation) but closes functionally within the first few hours of life
as the lungs expand?
A. Ductus venosus
B. Patent foramen ovale
C. Ductus arteriosus
D. Umbilical arteries
Answer: C
Rationale: The ductus arteriosus connects the pulmonary artery to the aorta.
After birth, increased oxygen tension causes the ductus arteriosus to
constrict, functionally closing within 10-15 hours. It may remain patent (PDA)
in preterm infants.
Q4. What is the primary stimulus for the first breath in a term
newborn?
A. Cold stress
B. Tactile stimulation
C. Chemical changes (decreased PaO₂, increased PaCO₂, decreased pH)
D. Light.
Answer: C
Rationale: Chemical factors (hypoxia, hypercapnia, acidosis) stimulate the
respiratory center in the medulla after cord clamping. Other stimuli (cold,
touch) are secondary, but chemical drive is primary.
, Q5. What happens to pulmonary vascular resistance (PVR)
immediately after birth?
A. Dramatically increases
B. Dramatically decreases
C. Remains the same as in utero
D. Increases temporarily
Answer: B
Rationale: Lung expansion and increased oxygen tension cause PVR to drop
dramatically. This reduces right ventricular afterload and increases
pulmonary blood flow.
Q6. The ductus venosus functionally closes shortly after birth due
to:
A. Increased systemic vascular resistance
B. Cessation of umbilical blood flow and clamping of the cord
C. Decreased oxygen tension
D. Prostaglandin release
Answer: B
Rationale: Clamping the umbilical cord stops flow from the placenta, causing
the ductus venosus to close within minutes to hours. The remnant is the
ligamentum venosum.
Q7. After birth, the newborn’s heart rate is primarily driven by the:
A. Sympathetic nervous system
B. Parasympathetic nervous system (vagal tone)
C. Adrenal medulla
D. Renin-angiotensin system
Answer: B
Rationale: At birth, the parasympathetic nervous system (vagal tone)
predominates, making the newborn susceptible to bradycardia with stimuli
such as suctioning or hypoxia.
