pphn-attorneys-blog.com — Persistent Pulmonary Hypertension of the Newborn (PPHN) is a critical medical condition that causes blood flow abnormalities. PPHN is the consequence of elevated pulmonary vascular resistance. PPHN is associated with pulmonary parenchymal disease, such as hyaline membrane disease, Persistent Fetal Circulation (PFC), and hypoplasia of the lungs. Be