产后出血是产科最重要的并发症之一 ,目前仍是我国产妇死亡的主要原因 ,尤以广大农村多见。因此 ,产后出血一直是产科领域研究的重要课题。在产后出血四大原因中 ,以宫缩乏力为主要原因 ,导致宫缩乏力的因素较多 ,如产程过长、子宫过度膨胀、使用镇静剂、精神因素等。本人通过? Postpartum hemorrhage is one of the most important complication of obstetrics, is still the main cause of maternal death in our country, especially in rural areas more common. Therefore, postpartum hemorrhage has been an important issue in the field of obstetrics. In the four main causes of postpartum hemorrhage, uterine inertia as the main reason leading to uterine inertia are more factors, such as prolonged labor, uterine excessive expansion, the use of sedatives, mental factors. I passed?