【o孟o】評論

Egan's Fundamentals of Respiratory Care６９２Amniotic fluid stainednwith meconium is found in approximately 12% of all births. Meconium-stained amniotic fluid is rare among infants youngernthan 37 weeks of gestational age. The clinical syndrome develops in 2 of every 1000 infants. Of infants with inhaled meconium, 95% clear their lungs spontaneously.More recent evidence suggestsnthat the real causative agent is fetal asphyxia that precedes aspiration. Fetal asphyxia causes pulmonary vasospasm and hyperreactivity of the vasculature, which lead to persistent pulmonarynhypertensio...