产褥期某些因素导致子宫复旧延迟称为子宫复旧不全,其原因有胎膜、胎盘、凝血块等残留,胎盘息肉,子宫肌瘤,子宫畸形,剖宫产后的子宫,宫内感染,常发生在非授乳产妇、多胎产妇、羊水过多产妇和产妇在产褥期长期卧床等。最常见的是胎盘及胎膜残留,残留的胎盘容易发生部分剥离,使宫缩受障碍而持续出血,当残留胎盘剥离时可出现多量出血。残留胎盘粘连紧,长时间在宫腔内可形成胎盘息肉,肌瘤组织在妊娠期间容易变性,影响子宫收缩力,又 Delayed uterine involution due to certain factors in the puerperium is called incomplete uterine involution because of fetal membranes, placenta, clotting and other residual placental polyps, uterine fibroids, uterine malformations, uterine cesarean section, intrauterine infection, often occur In non-lactating mothers, multiple mothers, polyhydramnios and maternal long-term bed rest in the puerperium. The most common is the placenta and fetal membranes residual, partial residual placenta prone to stripping, uterine contractions and persistent bleeding, when the residual placental stripping can occur when the amount of bleeding. Residual placenta adhesion tight, long time in the uterine cavity can form placental polyps, fibroids easily degeneration during pregnancy, affecting uterine contractility, and