Neonatal persistent pulmonary hypertension

Persistent pu1monary hypertension of newborn (PPHN) refers to the persistent increase in pulmonary vascular resistance after birth, and the pulmonary arterial pressure exceeds the systemic arterial pressure, making the transition from fetal-type circulation to normal. Ldquo; Adult rdquo; , And the right to left shunt of blood at the level of the atrial and / or arterial catheters caused clinical symptoms such as severe hypoxemia. The disease is more common in term or post-term infants.