Mathelier Amedee C, Karachorlu Kirkor
Department of Obstetrics and Gynecology and of Pathology St. Bernard Hospital Chicago, Illinois, USA.
Int J Fertil Womens Med. 2006 Jan-Feb;51(1):28-32.
The simultaneous occurrence of placenta previa and placenta accreta in patients who had previous low transverse cesarean delivery is presently well established. However, the sequence of previous cesarean delivery followed by placenta previa and accreta in a patient who also experiences a premature rupture of membranes as well as amniotic fluid embolism (AFE) is a rare obstetric phenomenon.
A 24-year-old woman, para 2 with two previous cesarean deliveries, at 32 weeks' gestation by last menstrual period, was admitted with premature rupture of membranes. A repeat cesarean delivery (CD) was done. Excessive hemorrhage occurred, necessitating a hysterectomy. Also, the patient developed an amniotic fluid embolism.
Placenta previa and placenta accreta may be observed in patients who have a previous CD scar and in whom AFE develops suddenly and unexpectedly. AFE, a condition with complex pathogenesis, presents a number of challenges, with the patient undergoing serious complications that may include massive hemorrhage, disseminated intravascular coagulopathy, and death. The obstetrician should be alert to the symptoms of AFE, and if they occur should begin prompt and aggressive treatment.
既往有低位横切口剖宫产史的患者同时发生前置胎盘和胎盘植入,目前已得到充分证实。然而,在一名既往有剖宫产史,随后发生前置胎盘和胎盘植入,同时还出现胎膜早破及羊水栓塞(AFE)的患者中,这种情况是一种罕见的产科现象。
一名24岁经产妇,既往有两次剖宫产史,根据末次月经计算妊娠32周,因胎膜早破入院。行再次剖宫产。术中发生大出血,需行子宫切除术。此外,患者发生了羊水栓塞。
在有既往剖宫产瘢痕且突然意外发生羊水栓塞的患者中,可能会观察到前置胎盘和胎盘植入。羊水栓塞发病机制复杂,会带来诸多挑战,患者会出现包括大出血、弥散性血管内凝血及死亡等严重并发症。产科医生应警惕羊水栓塞的症状,一旦发生应立即开始积极治疗。