凡达到或超过42孕周娩出者称过期产儿。近年来由于B超的应用可以在孕早期修正妊娠周数,故较既往的过期产儿有所减少,但仍占出生总数的3～4%。过期产儿的新生儿窒息、新生儿患病率均明显增高,故在分娩中及产后应将其当做高危儿处理。一、过期产儿的处置 1.分娩时及娩出以后:(1)儿头娩出时:如儿头已娩出,首先应擦拭面部羊水、胎脂及吸出鼻、 Anyone who reaches or surpasses 42 weeks of gestation will be referred to as expired child. In recent years due to the application of B-ultrasound can be corrected in the first trimester gestational weeks, it is more than the previous reduction of children, but still accounted for 3 to 4% of the total number of births. Outdated neonatal asphyxia, the prevalence of newborns were significantly higher, it is in childbirth and postpartum should be treated as high-risk children. First, the treatment of expired child 1. Childbirth and after delivery: (1) when the child is delivered: If the child has been delivered, first of all should be wiped facial amniotic fluid, fetal fat and nasal discharge,