摘要新生儿持续肺动脉高压(persistent pulm onary hypertension of the newborn,PPHN)又称持续胎儿循环,1969年首次报道。是由多种病因所导致的新生儿出生后肺循环压力、阻力下降障碍,肺循环压力持续高于体循环压力,回流到心脏的静脉血难以进入肺循环进行氧合,而从心房卵圆孔和(或)动脉导管水平直接流入体循环。
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