Lung Liquid Resorption and Fetal Lung Development Quiz
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Questions and Answers

What regulates lung liquid reabsorption at/after birth?

  • Progesterone and testosterone
  • Vasopressin and adrenaline (correct)
  • Cortisol and dopamine
  • Oxytocin and estrogen
  • What occurs when a fetus is apneic?

  • Lung liquid is converted into surfactant
  • Lung liquid is absorbed by the placenta
  • Lung liquid is released through exhalation
  • Lung liquid is trapped in the lungs (correct)
  • What is a consequence of lung hypoplasia in newborns?

  • Enhanced vascular branching and vessel number
  • Thickened inter-alveolar walls (correct)
  • Increased alveolar number and surface area
  • High production of surfactant
  • What characterizes the lungs of preterm newborns compared to term newborns?

    <p>Impaired oxygen transfer due to thick interalveolar septa</p> Signup and view all the answers

    What is a leading cause of neonatal morbidity and mortality in preterm infants?

    <p>Respiratory distress syndrome</p> Signup and view all the answers

    When does lung liquid move into distal airways following breathing onset?

    <p>Instantaneously as breathing starts</p> Signup and view all the answers

    What is the main cause of respiratory distress in preterm babies?

    <p>Immature lung development</p> Signup and view all the answers

    In the delivery room, why is continuous positive airway pressure (CPAP) used for respiratory support in newborns?

    <p>To reduce work of breathing</p> Signup and view all the answers

    What is a common challenge faced by non-invasive ventilation methods during delivery room care for very preterm infants?

    <p>Inability to meet respiratory needs</p> Signup and view all the answers

    Why are transient tachypnea of the newborn and pulmonary hypertension seen in some otherwise healthy term babies after birth?

    <p>Failure to clear airway liquid after birth</p> Signup and view all the answers

    What characteristic differentiates newborn lung physiology from adult lung physiology?

    <p>Closer resemblance to fetal lung physiology</p> Signup and view all the answers

    What is the potential consequence of persisting elevated airway liquid volumes at birth in predisposing newborns to respiratory distress?

    <p>Progression into severe respiratory distress</p> Signup and view all the answers

    What is the primary reliance of babies on lung liquid volumes prior to onset of breathing?

    <p>Movement of liquid into tissues</p> Signup and view all the answers

    Which condition is likely to occur due to abnormal trophoblast invasion during the first trimester?

    <p>Preeclampsia</p> Signup and view all the answers

    What is a potential consequence of failed decidualization in women with a history of severe preeclampsia?

    <p>Recurrent miscarriage</p> Signup and view all the answers

    What can be inferred about endometrial stroma cells isolated from women with a history of severe preeclampsia?

    <p>They fail to decidualize in vitro</p> Signup and view all the answers

    What does the release of toxins into maternal blood by abnormal trophoblast invasion lead to?

    <p>Maternal hypertension</p> Signup and view all the answers

    How may serum biomarkers related to abnormal decidualization be useful in clinical settings?

    <p>To prevent or treat pregnancy disorders like recurrent miscarriage</p> Signup and view all the answers

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