The most important reason to protect the preterm infant from cold stress is that:

It could make respiratory distress syndrome worse.

Shivering to produce heat may use up too many calories.

A low temperature may make the infant less able to digest nutrients.

Cold decreases circulation to the extremities.

Answer and Explanation

The Correct Answer is A

A) It could make respiratory distress syndrome worse:
The most critical reason to protect a preterm infant from cold stress is that hypothermia can exacerbate respiratory distress syndrome (RDS). Cold stress leads to an increased oxygen demand, which can worsen the infant’s already compromised respiratory function. In preterm infants, the immature lungs and underdeveloped surfactant production contribute to RDS, and hypothermia worsens the situation by increasing metabolic demands and impairing pulmonary function. Maintaining a stable body temperature is crucial for minimizing respiratory complications.

B) Shivering to produce heat may use up too many calories:
While it is true that preterm infants may not have the metabolic reserves to generate heat via shivering (as they lack significant brown fat), the primary concern is not shivering. Preterm infants generally do not shiver, and cold stress does not trigger this response. Instead, their body tries to conserve heat through vasoconstriction and increased metabolism, which can lead to hypoxia and worsening respiratory distress.

C) A low temperature may make the infant less able to digest nutrients:
Cold stress can affect a preterm infant’s gastrointestinal function by reducing blood flow to the digestive organs, which can impair nutrient absorption and digestion. However, the most immediate and serious consequence of cold stress is the increased metabolic demand and worsening of respiratory distress, rather than a direct impact on digestion. Protecting the infant from hypothermia helps prevent these secondary complications.

D) Cold decreases circulation to the extremities:
While cold stress can indeed lead to vasoconstriction and decreased circulation to the extremities, this is not the most significant concern. The primary issue with cold stress in preterm infants is the overall increase in metabolic demands, oxygen consumption, and exacerbation of respiratory problems, which can lead to more severe respiratory distress syndrome. The loss of peripheral circulation is a secondary concern.

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Correct Answer is A

Explanation

A) Protect the fetal skin from amniotic fluid:
Vernix caseosa is a whitish, cheese-like substance that covers the skin of the fetus during the second and third trimesters of pregnancy. It plays an essential role in protecting the fetal skin from prolonged exposure to amniotic fluid, which can be irritating. Vernix also serves as a barrier that helps prevent water loss and protects against potential infections.

B) Promote normal peripheral nervous system development:
While the development of the peripheral nervous system is vital to fetal development, the presence of vernix caseosa is not directly related to promoting nervous system development. The vernix's primary function is to protect the skin, not influence neural development. Neural development occurs due to other factors, such as adequate nutrition and hormonal regulation during pregnancy.

C) Allow transport of oxygen and nutrients across the amnion:
Vernix caseosa does not play a role in transporting oxygen or nutrients across the amnion. Oxygen and nutrients are transferred to the fetus through the placenta and the umbilical cord. The amniotic sac, which contains amniotic fluid, provides a cushioning effect for the fetus, but the vernix itself does not participate in nutrient or oxygen exchange.

D) Regulate fetal temperature:
Vernix caseosa does not directly regulate fetal temperature. Fetal temperature regulation is mainly managed by the mother's body through thermoregulation and the umbilical blood flow. The vernix may provide some protection against temperature fluctuations after birth, but its primary function is to protect the skin, not to regulate temperature.

A. Don't do anything, this is a normal finding B. Check the infant's 02 sat C. Call the MD for referral D. Put socks and mittens on the infant to keep them warm

Correct Answer is B

Explanation

A) Don't do anything, this is a normal finding:
While it's true that acrocyanosis (bluish-purple discoloration of the hands and feet) can be a normal finding in the first 24-48 hours of life due to immature circulation, it’s important to assess the severity of the condition and rule out more serious causes. Just ignoring it without assessing the infant’s oxygenation status could lead to missing a potential respiratory issue.

B) Check the infant's O2 sat:
The most appropriate action is to assess the infant’s oxygen saturation levels. Acrocyanosis is typically benign and resolves on its own, but persistent cyanosis or a drop in oxygen saturation could indicate a more serious issue, such as respiratory distress or congenital heart disease. A pulse oximeter is a non-invasive tool that can help determine whether the infant’s oxygenation is adequate. This would help guide further clinical decisions.
C) Call the MD for referral:
Calling the doctor should only be considered if the baby’s oxygen saturation levels are low, or if other concerning symptoms (like poor feeding, lethargy, or significant difficulty breathing) are present. If the O2 saturation is normal, there’s no immediate need for referral. The key is to assess first before escalating to the provider.

D) Put socks and mittens on the infant to keep them warm:
Although providing warmth can help with maintaining body temperature, simply putting socks and mittens on the baby is not sufficient to rule out respiratory issues or other causes of cyanosis. If the infant’s oxygen saturation is normal and the baby is otherwise stable, this may be appropriate. However, checking the O2 saturation first is the correct step to ensure that no underlying respiratory problems are contributing to the cyanosis.

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The most important reason to protect the preterm infant from cold stress is that:

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A new mother asks the nurse about the white substance" covering her infant. The nurse explains that the purpose of vernix caseosa is to:

Correct Answer is A

Explanation

You are assessing the baby and notice that their hands and feet are bluish-purple. You:

Correct Answer is B

Explanation

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