The document discusses uterine prolapse during pregnancy. It notes that uterine prolapse occurring for the first time during pregnancy is rare, about 1 in 10,000-15,000 deliveries. Risk factors for uterine prolapse include multiparity, congenital elongation of the cervix, trauma, neurological disorders, and pelvic floor muscle weakness. During pregnancy, prolapse can aggravate anatomical changes and increase risks of complications like abortion, preterm labor, and infection. Management involves techniques like pessary, bed rest, surgery to tighten the introitus, and sometimes termination is needed if repositioning is not possible. During labor, manual techniques and operative delivery may be needed.