1
HESI Exit Exam Bank on Neonatal
Thermoregulation and Hypoglycemia
Management
Table of Contents
Subtopic 1: Physiology of Thermoregulation and Glucose Homeostasis in
Neonates..........................................................................................................2
Subtopic 2: Assessment and Monitoring of Neonatal Temperature and Blood
Glucose............................................................................................................9
Subtopic 3: Risk Factors and High-Risk Populations for Neonatal
Hypoglycemia and Hypothermia....................................................................17
Subtopic 4: Immediate and Ongoing Interventions for Neonatal
Hypoglycemia and Hypothermia....................................................................25
Subtopic 5: Complications of Untreated Hypoglycemia and Hypothermia in
Neonates........................................................................................................33
Subtopic 6: Blood Glucose Monitoring and Interpretation in Neonates..........41
Subtopic 7: Long-Term Effects and Follow-Up of Neonatal Hypoglycemia and
Thermoregulation Issues................................................................................48
Subtopic 8: Breastfeeding, Feeding Practices, and Nutritional Support in
Thermoregulation and Hypoglycemia Prevention..........................................56
Subtopic 9: Screening, Diagnosis, and Monitoring Protocols for Neonatal
Hypoglycemia................................................................................................64
Subtopic 10: Discharge Planning, Family Education, and Long-Term Outcomes
in Neonatal Hypoglycemia and Thermoregulation.........................................72
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Subtopic 1: Physiology of Thermoregulation
and Glucose Homeostasis in Neonates
Question 1:
A full-term neonate is born in a delivery room kept at 21°C (70°F). Why is the
newborn at risk for rapid heat loss?
A. The neonate has a high metabolic rate
B. The neonate has a large body surface area relative to body mass
C. The neonate’s brown fat is fully developed
D. The neonate’s skin is thick and well-keratinized
Correct answer: B
Rationale: Newborns, particularly those who are premature or small, have a
proportionally larger body surface area compared to their weight, increasing
the risk for heat loss through radiation, conduction, and convection.
Question 2:
Which type of heat loss occurs when a wet neonate is placed under a fan?
A. Conduction
B. Radiation
C. Evaporation
D. Convection
Correct answer: C
Rationale: Evaporation heat loss occurs when amniotic fluid evaporates from
the neonate's skin, especially when exposed to air flow like from a fan or
drafts.
Question 3:
Why is cold stress a serious condition in neonates?
, 3
A. It leads to increased sleepiness
B. It increases oxygen consumption and glucose use
C. It lowers bilirubin levels
D. It enhances thermogenesis efficiency
Correct answer: B
Rationale: Cold stress triggers non-shivering thermogenesis in neonates,
which requires increased oxygen and glucose, risking hypoxia and
hypoglycemia.
Question 4:
What is the primary role of brown adipose tissue in neonates?
A. Insulate the body
B. Generate heat through non-shivering thermogenesis
C. Store glucose for energy
D. Support bone development
Correct answer: B
Rationale: Brown fat metabolism generates heat without muscle activity,
vital for thermoregulation in newborns.
Question 5:
Which of the following is a clinical sign of neonatal hypoglycemia?
A. Elevated body temperature
B. Hypertonia
C. Jitteriness or tremors
D. Excessive crying
Correct answer: C
Rationale: Hypoglycemia in neonates often manifests as jitteriness,
irritability, hypotonia, and poor feeding.
, 4
Question 6:
How does thermoregulation relate to glucose levels in neonates?
A. Cold neonates use less glucose
B. Brown fat conserves glucose
C. Cold stress increases glucose consumption
D. Heat loss prevents hypoglycemia
Correct answer: C
Rationale: In response to cold, neonates metabolize glucose rapidly to
generate heat, which can deplete stores and lead to hypoglycemia.
Question 7:
Which newborns are at highest risk for hypoglycemia?
A. Infants born via cesarean section
B. Infants born to mothers with anemia
C. Infants of diabetic mothers (IDMs)
D. Infants born at 40 weeks gestation
Correct answer: C
Rationale: IDMs often have hyperinsulinemia, placing them at high risk for
early postnatal hypoglycemia as maternal glucose is withdrawn.
Question 8:
Which is an expected physiologic glucose nadir in a healthy term newborn?
A. 70–90 mg/dL within 1 hour of life
B. 60–80 mg/dL at 24 hours
C. 30–40 mg/dL at 1–2 hours of life
D. 90–100 mg/dL at birth
HESI Exit Exam Bank on Neonatal
Thermoregulation and Hypoglycemia
Management
Table of Contents
Subtopic 1: Physiology of Thermoregulation and Glucose Homeostasis in
Neonates..........................................................................................................2
Subtopic 2: Assessment and Monitoring of Neonatal Temperature and Blood
Glucose............................................................................................................9
Subtopic 3: Risk Factors and High-Risk Populations for Neonatal
Hypoglycemia and Hypothermia....................................................................17
Subtopic 4: Immediate and Ongoing Interventions for Neonatal
Hypoglycemia and Hypothermia....................................................................25
Subtopic 5: Complications of Untreated Hypoglycemia and Hypothermia in
Neonates........................................................................................................33
Subtopic 6: Blood Glucose Monitoring and Interpretation in Neonates..........41
Subtopic 7: Long-Term Effects and Follow-Up of Neonatal Hypoglycemia and
Thermoregulation Issues................................................................................48
Subtopic 8: Breastfeeding, Feeding Practices, and Nutritional Support in
Thermoregulation and Hypoglycemia Prevention..........................................56
Subtopic 9: Screening, Diagnosis, and Monitoring Protocols for Neonatal
Hypoglycemia................................................................................................64
Subtopic 10: Discharge Planning, Family Education, and Long-Term Outcomes
in Neonatal Hypoglycemia and Thermoregulation.........................................72
, 2
Subtopic 1: Physiology of Thermoregulation
and Glucose Homeostasis in Neonates
Question 1:
A full-term neonate is born in a delivery room kept at 21°C (70°F). Why is the
newborn at risk for rapid heat loss?
A. The neonate has a high metabolic rate
B. The neonate has a large body surface area relative to body mass
C. The neonate’s brown fat is fully developed
D. The neonate’s skin is thick and well-keratinized
Correct answer: B
Rationale: Newborns, particularly those who are premature or small, have a
proportionally larger body surface area compared to their weight, increasing
the risk for heat loss through radiation, conduction, and convection.
Question 2:
Which type of heat loss occurs when a wet neonate is placed under a fan?
A. Conduction
B. Radiation
C. Evaporation
D. Convection
Correct answer: C
Rationale: Evaporation heat loss occurs when amniotic fluid evaporates from
the neonate's skin, especially when exposed to air flow like from a fan or
drafts.
Question 3:
Why is cold stress a serious condition in neonates?
, 3
A. It leads to increased sleepiness
B. It increases oxygen consumption and glucose use
C. It lowers bilirubin levels
D. It enhances thermogenesis efficiency
Correct answer: B
Rationale: Cold stress triggers non-shivering thermogenesis in neonates,
which requires increased oxygen and glucose, risking hypoxia and
hypoglycemia.
Question 4:
What is the primary role of brown adipose tissue in neonates?
A. Insulate the body
B. Generate heat through non-shivering thermogenesis
C. Store glucose for energy
D. Support bone development
Correct answer: B
Rationale: Brown fat metabolism generates heat without muscle activity,
vital for thermoregulation in newborns.
Question 5:
Which of the following is a clinical sign of neonatal hypoglycemia?
A. Elevated body temperature
B. Hypertonia
C. Jitteriness or tremors
D. Excessive crying
Correct answer: C
Rationale: Hypoglycemia in neonates often manifests as jitteriness,
irritability, hypotonia, and poor feeding.
, 4
Question 6:
How does thermoregulation relate to glucose levels in neonates?
A. Cold neonates use less glucose
B. Brown fat conserves glucose
C. Cold stress increases glucose consumption
D. Heat loss prevents hypoglycemia
Correct answer: C
Rationale: In response to cold, neonates metabolize glucose rapidly to
generate heat, which can deplete stores and lead to hypoglycemia.
Question 7:
Which newborns are at highest risk for hypoglycemia?
A. Infants born via cesarean section
B. Infants born to mothers with anemia
C. Infants of diabetic mothers (IDMs)
D. Infants born at 40 weeks gestation
Correct answer: C
Rationale: IDMs often have hyperinsulinemia, placing them at high risk for
early postnatal hypoglycemia as maternal glucose is withdrawn.
Question 8:
Which is an expected physiologic glucose nadir in a healthy term newborn?
A. 70–90 mg/dL within 1 hour of life
B. 60–80 mg/dL at 24 hours
C. 30–40 mg/dL at 1–2 hours of life
D. 90–100 mg/dL at birth
