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Persistent pulmonary hypertension of the newborn (PPHN) is a syndrome of failed circulatory adaptation at birth, seen in about 2/1000 live-born infants. While it is mostly seen in term and near-term infants, it can be recognized in some premature infants with respiratory distress or bronchopulmonary dysplasia. Persistent pulmonary hypertension of the newborn, or PPHN, occurs when a newborn's circulation system doesn't adapt to breathing outside the womb. While in the womb, the fetus receives oxygen through the umbilical cord, so the lungs need little blood supply.<br>
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Persistent Pulmonary Hypertension Persistent pulmonary hypertension of the newborn (PPHN) is a syndrome of failed circulatory adaptation at birth, seen in about 2/1000 live-born infants. While it is mostly seen in term and near-term infants, it can be recognized in some premature infants with respiratory distress or bronchopulmonary dysplasia. Persistent pulmonary hypertension of the newborn, or PPHN, occurs when a newborn's circulation system doesn't adapt to breathing outside the womb. While in the womb, the fetus receives oxygen through the umbilical cord, so the lungs need little blood supply.