Physiologic Transitioning in Newborns

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Questions and Answers

What physiological adaptation occurs during the transition from intrauterine to extrauterine life concerning blood glucose stabilization?

  • Decreased metabolism rate
  • Ability to stabilize blood glucose (correct)
  • Increased insulin production
  • Lowered glucose requirements

Which structure closes to initiate normal blood circulation after birth?

  • Foramen ovale (correct)
  • Umbilical arteries
  • Ductus venosus
  • Ductus arteriosus

What is the normal respiratory rate for a healthy neonate?

  • 40 to 80 breaths per minute
  • 30 to 60 breaths per minute (correct)
  • 15 to 30 breaths per minute
  • 20 to 40 breaths per minute

Which of the following is NOT a component required for a comprehensive neonatal nursing assessment?

<p>Administering vaccinations (D)</p> Signup and view all the answers

What role does surfactant play in the respiratory adaptation of a newborn?

<p>Facilitates gas exchange (A)</p> Signup and view all the answers

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Study Notes

Physiologic Transitioning

  • Most dramatic changes occur in four areas: circulatory, respiratory, thermoregulation, and ability to stabilize blood glucose

Circulatory Adaptations

  • Switch from fetal to newborn circulation
  • Change from placental to pulmonary gas exchange
  • Changes in fetal structures: foramen ovale, ductus arteriosus, ductus venosus, umbilical arteries, and vein
  • Heart rate
  • Blood volume
  • Blood components
  • Delayed cord clamping

Fetal Circulation

  • Ductus Venosus: Connects umbilical vein to the inferior vena cava, bypassing the liver. It allows oxygenated blood from the placenta to bypass the liver in the fetus.
  • Foramen Ovale: Opening between the right and left atria, allowing blood to bypass the lungs.
  • Ductus Arteriosus: Connects the pulmonary artery to the aorta, allowing blood to bypass the lungs.

Respiratory Adaptations

  • Initiation of respirations
  • Surfactant
  • Respirations: 30 to 60 breaths per minute, irregular, shallow, unlabored, short periods of apnea

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