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The Newborn

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Removal of fluid from the newborn respiratory tract occurs through which of the following mechanisms?

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a. Physical compression of the thorax

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b. Absorption of fluid into the pulmonary circulation

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c. Absorption of fluid into the pulmonary lymphatic system

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d. All of the above

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Which of the following events aids in closure of the ductus arteriosus in the newborn?

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a. Fall in pulmonary arterial pressure

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b. Thoracic compression during delivery

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c. Postnatal accumulation of carbon dioxide

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d. Increased compression of pulmonary vasculature

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Delayed removal or absorption of amnionic fluid from the pulmonary system results in which of the following conditions?

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a. Respiratory distress syndrome

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b. Persistent pulmonary hypertension

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c. Transient tachypnea of the newborn

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d. Premature closure of the ductus arteriosus

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What type of cell produces surfactant in the fetal lung?

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a. Type I pneumocytes

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b. Type II pneumocytes

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c. Smooth muscle cells

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d. Squamous epithelial cells

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A 25-year-old primigravida explains to her obstetrician that she is considering a home delivery with a local midwife. Which of the following is an accurate statement regarding home births?

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a. Neonatal death rates are doubled for infants born at home.

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b. One in 10 neonates born at home needs extensive resuscitation.

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c. When patients are properly selected, neonatal complication rates are not increased.

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d. None of the above

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What differentiates secondary apnea from primary apnea in the newborn?

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a. It is resolved with simple stimulation.

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b. It is accompanied by a ...

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