例1:24岁。G_1P_0,因足月产后8小时,阴道内脱出肿物伴大流血而急症入院。病人于8小时前在家顺产一女婴,产后40分钟因胎盘未娩出,接生员一手按压下腹部,一手用力牵拉脐带,病人突感下腹剧痛,随之胎盘及一肿物突出于阴道并伴大流血。查体:P96次/min,Bp8/5Pa。重度贫血貌,腹部触不到宫体,阴道内脱出一质硬球状肿物 Example 1:24 years old. G_1P_0, due to 8 hours after full-term pregnancy, vaginal prolapse with massive bleeding and emergency admission. The patient had a baby girl delivered at home eight hours earlier and had no placenta delivered 40 minutes after birth. The midwife pressed the lower abdomen with one hand and pulled the umbilical cord with one hand. The patient suddenly felt a sharp pain in the lower abdomen. The placenta and a tumor protruded from the vagina With bloodshed. Physical examination: P96 times / min, Bp8 / 5Pa. Severe anemia, abdomen touches the palace, vaginal prolapse of a hard ball-like mass