THE EXAM FROM 2023 TO 2025 |
ACCURATE AND VERIFIED ANSWERS | NEXT
GEN FORMAT | GUARANTEED PASS
1. The immediate needs of the newborn are airway, breathing, circulation, and warmth.
Which of the following best describes the surfactant production in the alveoli?
• A) By approximately 25 weeks' gestation, the surfactant produced by the alveoli is
sufficient for lung function.
• B) By approximately 35 weeks' gestation, the surfactant produced by the alveoli is
sufficient in amount (L/S ratio 2:1) to allow the alveoli to remain partially expanded
when the newborn begins to breathe at birth.
• C) Surfactant production is not necessary for breathing to begin at birth.
• D) Surfactant is produced in small amounts after birth to allow breathing.
• Correct Answer: B) By approximately 35 weeks' gestation, the surfactant produced by
the alveoli is sufficient in amount (L/S ratio 2:1) to allow the alveoli to remain partially
expanded when the newborn begins to breathe at birth.
• Rationale: Surfactant production at approximately 35 weeks' gestation helps keep the
alveoli expanded and assists with breathing at birth.
2. For the lungs to function properly, two changes must happen. Which of the following is the
first change that must occur?
• A) Pulmonary circulation must increase.
• B) Pulmonary ventilation must be established with lung expansion at the first breath.
• C) Surfactant must be produced.
• D) The foramen ovale must close.
• Correct Answer: B) Pulmonary ventilation must be established with lung expansion at
the first breath.
, • Rationale: The first breath expands the lungs, establishing pulmonary ventilation, which
is necessary for lung function after birth.
3. Which of the following factors influences the initiation of breathing in a newborn?
• A) Physical
• B) Chemical
• C) Thermal
• D) Sensory
• E) All of the above
• Correct Answer: E) All of the above
• Rationale: The initiation of breathing is influenced by physical, chemical, thermal, and
sensory factors.
4. Which physical factor influences the initiation of breathing in a newborn?
• A) The compression of the fetal chest as it moves through the birth canal, which
squeezes fluid from the lungs and increases intrathoracic pressure.
• B) The baby’s first breath drawing in air.
• C) The exposure to a colder environment after birth.
• D) The baby's position after birth.
• Correct Answer: A) The compression of the fetal chest as it moves through the birth
canal, which squeezes fluid from the lungs and increases intrathoracic pressure.
• Rationale: The compression of the fetal chest during delivery helps expel fluid from the
lungs, allowing air to replace it during the first breath.
5. Which chemical factor triggers the initiation of breathing in a newborn?
• A) The presence of oxygen in the blood.
• B) The abrupt cessation of placental circulation and clamping of the umbilical cord,
which triggers the respiratory center in the medulla.
, • C) The change in temperature from the uterus to the outside environment.
• D) The tactile stimulation of the newborn's body.
• Correct Answer: B) The abrupt cessation of placental circulation and clamping of the
umbilical cord, which triggers the respiratory center in the medulla.
• Rationale: The clamping of the cord and cessation of placental circulation send impulses
to the medulla, stimulating respiration.
6. What is the thermal factor that influences the initiation of breathing in a newborn?
• A) A decrease in body temperature of more than 10°F.
• B) The sudden change in temperature from the intrauterine environment to the
extrauterine environment, a decrease of more than 20°F.
• C) The ambient room temperature.
• D) The warmth provided by the mother's touch.
• Correct Answer: B) The sudden change in temperature from the intrauterine
environment to the extrauterine environment, a decrease of more than 20°F.
• Rationale: The significant temperature change stimulates the skin nerve endings and
encourages the newborn to take the first breath.
7. What sensory factor helps initiate the newborn’s first breath?
• A) The quiet, dark environment of the uterus.
• B) The sensation of the umbilical cord being cut.
• C) The auditory, visual, and tactile stimuli associated with birth.
• D) The lack of air movement in the delivery room.
• Correct Answer: C) The auditory, visual, and tactile stimuli associated with birth.
• Rationale: Sensory stimuli, such as sound, light, and touch, help stimulate the newborn
to initiate respiration after birth.
, 8. Which of the following circulatory changes must happen for successful transition to
neonatal circulation?
• A) The ductus arteriosus, foramen ovale, and ductus venosus stop functioning, and
normal circulation takes over.
• B) The ductus venosus remains open.
• C) The foramen ovale remains open to allow blood to flow from the lungs.
• D) The lungs remain bypassed for the first few weeks after birth.
• Correct Answer: A) The ductus arteriosus, foramen ovale, and ductus venosus stop
functioning, and normal circulation takes over.
• Rationale: These fetal circulatory pathways must close to allow the transition to normal
neonatal circulation.
9. Which of the following describes the process of thermoregulation in the newborn?
• A) The newborn produces heat through metabolism and nonshivering thermogenesis.
• B) Shivering is the primary way the newborn produces heat.
• C) Newborns do not require thermoregulation immediately after birth.
• D) Thermoregulation in the newborn is managed through changes in ambient
temperature.
• Correct Answer: A) The newborn produces heat through metabolism and nonshivering
thermogenesis.
• Rationale: Nonshivering thermogenesis, unique to newborns, allows them to produce
heat through the metabolism of brown fat.
10. Where is brown fat located in the newborn, and what is its function?
• A) Brown fat is found in the newborn's extremities and is used to regulate blood
pressure.
• B) Brown fat is located at the back of the neck, between the scapula, around the kidneys
and adrenals, in the axilla, and around the heart and abdominal aorta. It is used to
generate heat.