Definition PROM is defined as the rupture of the chorioamniotic membrane before the onset of labor

Cerebral vascular Disease Definition of term: The term cerebrovascular disease designates any abnormality of the brain resulting from a pathologic process of the blood vessels. Sudden loss of neurological function is the hallmark of cerebrovascula disease. Cerebrovascular disease is the third most common cause

Dystocia literally means difficult labor and it is characterized by abnormally slow progress of labor It is the consequence of four distinct abnormalities that may exist singly or combination

Incidence and Prevalence: Increase significantly Range from 1~50% General population: 1~2% Infertile women: 30~50% Occurs primarily in women in 25~45s

Definition of pregnancy Pregnancy is defined as the course of embryo and fetal growth and development in uterine It begain at the fertilization and end the delivery of the fetal and it's attachment

Normal Pregnancy Pregnand The course that the embryo and the fetus grow in the maternal body Stages f pregnancy Early pregnancy: $12 weeks Mid pregnancy:≥13 weeks,≤27 weeks Late pregnancy: 228 weeks Term pregnancy:≥37 weeks,<42 weeks

妊娠滋养细胞疾病:来源于胎盘绒毛滋养细胞 的疾病,包括葡萄胎、侵蚀性葡萄胎、绒癌和 一类少见的胎盘部位滋养细胞肿瘤

病因 一、遗传基因缺陷 二、环境因素 三、母体因素 四、胎盘内分泌功能不足 五、免疫因素

Major causes of death for pregnancy women ( maternal mortality) Postpartum hemorrhage (28%) · heart diseases pregnancy-induced hypertension (or Amniotic fluid embolism) infection

Definition Fetal distress is defined as depletion of oxygen and accumulation of carbon dioxide,leading to a state of \hypoxia and acidosis during intra-uterine life