Michael P. D'Alessandro, M.D.
Peer Review Status: Internally Peer Reviewed
Persistent or recurrent pulmonary artery hypertension with right to left shunting through a patent foramen ovale and patent ductus arteriosus in a patient with pulmonary disease. Factors that increase pulmonary vascular resistance include acidosis, hypoglycemia, hypothermia, and polycythemia.
The CXR may be normal or can show changes of the underlying lung disease such as hyaline membrane disease, meconium aspiration syndrome, etc. A slightly enlarged heart may be seen along with slightly decreased pulmonary vascularity.
See References Chapter.
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