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胎粪吸入综合征(moconium aspiration syn-dronu;MAS)是指胎儿在缺氧时,将胎粪排入羊水,又将此含胎粪的羊水吸入呼吸道,造成气道阻塞而引起的一系列症状.也有称胎粪吸入性肺炎者.其临床表现较一般羊水吸人性肺炎严重,并发症较多.有胎粪吸入的新生儿在出生2～3日内可发展为进行性呼吸衰竭,严重缺氧,甚至死亡.是新生儿主要死亡原因之一。90%以上患者为过期儿及足月儿.病死率可高达19～34%据报道,在足月儿中,此症的病死率是其他死亡原因总和的20倍,山此可见其后果之严重。一、与发病有关的因素
Mesenteric asymptomatic syndrome (moconium aspiration syn-dronu; MAS) refers to the fetus in hypoxia, the discharge of meconium into amniotic fluid, and this meconium-containing amniotic fluid inhalation of the respiratory tract, causing airway obstruction caused by a series of symptoms .Also known as meconium aspiration pneumonia.Its clinical manifestations than the general amniotic fluid pneumonia, severe pneumonia, complications are more .Meconium aspiration of newborns in the birth of 2 to 3 days can progress to progressive respiratory failure, severe hypoxia , Or even death, is one of the major causes of death in newborns. More than 90% of patients are children with expired and term infants. Mortality can be as high as 19 to 34%. According to reports, in full-term infants, the disease mortality rate is 20 times the sum of other causes of death, the mountain can be seen the consequences of serious . First, with the incidence of the factors