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The Newborn

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

a. Physical compression of the thorax

b. Absorption of fluid into the pulmonary circulation

c. Absorption of fluid into the pulmonary lymphatic system

d. All of the above

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

a. Fall in pulmonary arterial pressure

b. Thoracic compression during delivery

c. Postnatal accumulation of carbon dioxide

d. Increased compression of pulmonary vasculature

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

a. Respiratory distress syndrome

b. Persistent pulmonary hypertension

c. Transient tachypnea of the newborn

d. Premature closure of the ductus arteriosus

What type of cell produces surfactant in the fetal lung?

a. Type I pneumocytes

b. Type II pneumocytes

c. Smooth muscle cells

d. Squamous epithelial cells

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?

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

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

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

d. None of the above

What differentiates secondary apnea from primary apnea in the newborn?

a. It is resolved with simple stimulation.

b. It is accompanied by a ...

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