What vascular anatomic alteration could occur as a consequence of hypoxia in a patient with RDS?
a. Closure of the ductus arteriosus
b. Transient pulmonary hypertension
c. Increased flow through the ductus venosus
d. Airway mucosal edema
B
Hypoxia can induce arterial vasoconstriction leading to transient pulmonary hypertension. This can lead to blood shunting through an open ductus arteriosus. Because the neonate has been born, the ductus venosus will remain closed. Hypoxia will not cause airway mucosal edema.
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