《妇产科学》课程教学课件（PPT讲稿）placenta previa（showed）

Placenta previa Xiaojing Dong The Second Affiliated Hospital of Chongqing Medical University E-mail:xffdoctor@163.com

Placenta previa Xiaojing Dong The Second Affiliated Hospital of Chongqing Medical University E-mail: xffdoctor@163.com

Vocabulary Placenta 胎盘 Endometrium 子宫内膜 Puerperal infection 产褥感染 Curettage 刮宫 Cesarean section 剖宫产 Endometritis 子宫内膜炎 Succenturiate placenta 副胎盘 Placenta increta 胎盘植入 Postpartum 产后 Vasa previa 前置血管

Vocabulary Placenta 胎盘 Endometrium 子宫内膜 Puerperal infection 产褥感染 Curettage 刮宫 Cesarean section 剖宫产 Endometritis 子宫内膜炎 Succenturiate placenta 副胎盘 Placenta increta 胎盘植入 Postpartum 产后 Vasa previa 前置血管

Cord velamentous insertion 脐带帆状附着 Placental abruption 胎盘早剥 Contraception 避孕 Miscarriage 流产 Oxytocin 缩宫素 Methergine 甲基麦角新碱 Hysterectomy 子宫切除术 Placenta membranacea 膜状胎盘 Zygote 受精卵 Polyp 息肉

Cord velamentous insertion 脐带帆状附着 Placental abruption 胎盘早剥 Contraception 避孕 Miscarriage 流产 Oxytocin 缩宫素 Methergine 甲基麦角新碱 Hysterectomy 子宫切除术 Placenta membranacea 膜状胎盘 Zygote 受精卵 Polyp 息肉

uterine placenta body 1o7seg重ent of uterus internal os of cervix Normal site of placenta

Normal site of placenta

Definition QWhen gestational week is over 28 weeks,the placenta is implanted partially or completely over the lower uterine uterine segment within the body zone of effacement and dilatation of the cervix, previa denotes the position placenta of the placenta in relation to internal os low segment of uterus of cervix the presenting part

Definition When gestational week is over 28 weeks, the placenta is implanted partially or completely over the lower uterine segment within the zone of effacement and dilatation of the cervix, previa denotes the position of the placenta in relation to the presenting part

Incidence 30.5%,in our country0.24%~1.57%, recently reported 1.3~4.6% clt is the major reason of hemorrhage in the third trimester pregnancy

Incidence 0.5%, in our country 0.24%~1.57%, recently reported 1.3~4.6% It is the major reason of hemorrhage in the third trimester pregnancy

Etiology 1.Lesion of uterine endometrium Puerperal infection,prolificacy, curettage,cesarean section et al-> endometritis,the trauma of endometrium→take more nutrition-→ placental area enlarged

Etiology 1. Lesion of uterine endometrium Puerperal infection, prolificacy, curettage, cesarean section et al→ endometritis, the trauma of endometrium→ take more nutrition → placental area enlarged

2.Abnormal placenta QRTwin pregnancy Succenturiate placenta Horseshoe placenta RLingual -shaped placenta oRPlacenta membranacea

2. Abnormal placenta Twin pregnancy Succenturiate placenta Horseshoe placenta Lingual –shaped placenta Placenta membranacea

07 3.The retardation of zygote growth When the zygote reached the cavity of uterus,it didn't develop to the late blastocyst which moved to the low segment of uterus to imbed

3.The retardation of zygote growth When the zygote reached the cavity of uterus, it didn’t develop to the late blastocyst which moved to the low segment of uterus to imbed

受精後3G特間 桑定胚 受精楼3日 受精 89 受需後4日 胞胚 受精後5日 排卵 受精後6日 子宫内膜