Systemic desaturation of a liveborn baby resulting from persistent pulmonary hypertension with a patent ductus arteriosus and patent foramen ovale, such that the circulation in postnatal life follows the fetal course. [hpo_contributor:ddd_dbrown]

Persistent fetal circulation is a condition caused by a failure in the systemic circulation and pulmonary circulation to convert from the antenatal circulation pattern to the "normal" pattern. Infants experience a high mean arterial pulmonary artery pressure and a high afterload at the right ventricle...