氯胺酮能使子宫收缩,可减少产后出血,但这种作用也减少分娩前子宫的血运,所以对胎盘功能不全和子宫内氧不足的病例不利。产科某些手术如剖肤产和产钳助产可用静脉氯胺酮麻醉,但对新生儿的影响尚不清楚。有人认为氯胺酮能通过胎盘,但产妇静脉注药后多长时间与新生儿血中达到的浓度两者的关系文献报道不多。作者选择10名健康产妇,在氯胺酮静脉麻醉下 Ketamine can shrink the uterus and reduce postpartum hemorrhage, but this effect also reduces the uterine blood supply before delivery, so adverse to placental insufficiency and intrauterine oxygen deficiency. Some obstetric surgery such as cutaneous and forceps midwifery can be intravenous ketamine anesthesia, but the impact on the newborn is unclear. Some people think that ketamine can pass through the placenta, but the relationship between maternal intravenous drug how long and the neonatal blood concentration reached the two reported little literature. The authors selected 10 healthy mothers under ketamine intravenous anesthesia