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1. What is the main regulator of temperature in newborns?
A. Shivering
B. Brown fat
C. Subcutaneous white fat
D. Sweating
Rationale: Newborns cannot shiver effectively. They generate heat by burning brown fat, which
develops around 36 weeks, so preterm infants are especially prone to cold stress.
2. What is the normal newborn temperature range?
A. 95.0-96.5°F
B. 97.7-99.0°F
C. 99.5-101.0°F
D. 100.4-102.0°F
Rationale: This is the expected range for a stable newborn. Readings outside it call for
rewarming or evaluation for infection.
3. Which fetal structure connects the umbilical vein to the inferior vena cava, bypassing the
liver?
A. Ductus arteriosus
B. Ductus venosus
C. Foramen ovale
D. Umbilical artery
Rationale: The ductus venosus carries oxygenated blood past the fetal liver toward the heart.
,4. Which fetal structure connects the pulmonary artery to the aorta, bypassing the lungs?
A. Ductus venosus
B. Ductus arteriosus
C. Foramen ovale
D. Aortic arch
Rationale: Because fetal lungs are fluid-filled, the ductus arteriosus diverts blood away from
them and into the systemic circulation.
5. Which fetal structure connects the two atria of the heart?
A. Ductus arteriosus
B. Ductus venosus
C. Foramen ovale
D. Septum primum only
Rationale: The foramen ovale shunts blood from right atrium to left atrium in utero and
normally closes after birth.
6. Which findings are signs of respiratory distress in a newborn? (Select all that apply)
A. Grunting
B. Retractions (use of accessory muscles)
C. Nasal flaring
D. Acrocyanosis
Rationale: Grunting, retractions, and nasal flaring show increased work of breathing.
Acrocyanosis is a normal finding in the first hours of life.
7. Shivering in a newborn is a sign of:
A. Hypoglycemia only
B. Cold stress
C. Normal thermoregulation
D. Seizure activity
Rationale: Shivering means the newborn is already struggling to stay warm and needs prompt
warming.
,8. Which of the following can cause hypothermia in a newborn? (Select all that apply)
A. Sepsis/infection
B. Hypoglycemia
C. Decreased brown fat
D. Excess brown fat stores
Rationale: Infection, low glucose, and inadequate brown fat all impair heat production.
9. A newborn is placed on a cold scale without a liner. Which mechanism of heat loss does this
describe?
A. Convection
B. Evaporation
C. Conduction
D. Radiation
Rationale: Conduction is direct heat transfer from the infant to a cooler surface it touches, such
as a cold table. (Source said "one fetus to another surface"; corrected to "infant.")
10. A newborn is positioned directly under an air vent. Which mechanism of heat loss is
occurring?
A. Conduction
B. Convection
C. Evaporation
D. Radiation
Rationale: Convection is heat loss to moving air currents, such as drafts or vents.
11. Which mechanism of heat loss occurs when a wet newborn is not dried promptly?
A. Conduction
B. Convection
C. Evaporation
D. Radiation
, Rationale: Evaporation is heat lost as moisture changes from liquid to vapor on the skin. Drying
the infant immediately prevents it.
12. Which mechanism of heat loss occurs when a newborn's crib sits near a cold window or
wall?
A. Conduction
B. Convection
C. Evaporation
D. Radiation
Rationale: Radiation is heat loss to cooler solid objects that are not in direct contact with the
infant. (Source said "cooler surface"; clarified to distinguish it from conduction.)
13. What is the normal blood glucose for a newborn?
A. >20 mg/dL at all times
B. >30 mg/dL in the first 24 hours and >40 after
C. >40 mg/dL in the first 24 hours and >50 mg/dL after
D. >70 mg/dL at all times
Rationale: These thresholds trigger intervention when glucose falls below them.
14. A newborn has a low blood glucose. What is the appropriate intervention?
A. Give an immediate IV insulin dose
B. Feed the baby and recheck in one hour
C. Withhold feeding and recheck in 4 hours
D. Place the baby in a cold environment
Rationale: For an asymptomatic newborn, feeding is the first-line intervention, followed by a
recheck to confirm the glucose has risen.
15. What is the glucose monitoring plan for an LGA newborn?
A. One check at birth only
B. Check before each feeding for 24 hours, with two consecutive results above 50