产后出血的发病率高，并发症严重，死亡率高，临床研究较多，但基础研究鲜见报道。本项目针对"降低产后出血率"的关键科学问题，在前期工作基础上，拟以"子宫内压和子宫肌电信号的测定"为主线，探讨"宫缩乏力性产后出血的生理学诊断标准和临床压迫止血的原理及应用时机"。.具体开展以下工作：①设计发明产后子宫内压及子宫肌电信号的测定方法；②研究子宫内压及子宫肌电信号与产后出血量的相关性，并确定阈值；③综合高危因素，构建人工神经元网络模型，确立产后出血预测系统；④开发产后出血诊治系统，基于力学基础研究Bakri球囊最佳压迫止血的液体剂量及其应用时机。.因此，本项目将为阴道分娩宫缩乏力性产后出血的预防性治疗提供理论依据，减少医务人员的主观臆断，实现科学、客观、准确的预测，以及早期诊治的目标，切实降低宫缩乏力性产后出血的发生率，减少出血量，确保分娩质量，提高人口素质。

Postpartum hemorrhage occur with high incidence, causing serious complications and a high rate of mortality. Compared with more clinical research, basic reasearch is rarely reported. ..This study aims to deal with the key scientific problems related to "reducing the rate of postpartum hemorrhage". Based on previous work, this study intends to emphasize the application of "intrauterine pressure (IUP) and uterus electromyogram (EMG)". It will also explore the "physiological diagnosis standards of postpartum hemorrhage with atony as well as the application, mechanics, and timing of clinical hemostatic methods". This study includes the following specifics:..(1).The design and development of measurement methods for postpartum intrauterine pressure (IUP) and uterus electromyogram (EMG);.(2).The correlation between postpartum intrauterine pressure (IUP), uterus electromyogram (EMG) and the volume of postpartum hemorrhage, as well as determining their thresholds. .(3).Integrating the risk factors of postpartum hemorrhage, we will construct an artificial neural network model and establish a postpartum hemorrhage prediction system;.(4).The development of diagnosis and treatment systems for postpartum hemorrhage; based on research of mechanism for postpartum hemorrhage with atony, choosing an appropriate liquid dose and time application for use with the Bakri balloon. ..Consequently, this study can provide a theoretical basis for the vaginal delivery of prophylactics intended for the preventative treatment of postpartum hemorrhage, reducing the possibility of subjective judgement by medical staff, achieving more scientific, objective and accurate predictions to achieve the goal of early diagnosis and treatment, effectively reducing the rate of postpartum hemorrhage with atony, decreasing blood loss, to ensure delivery and population quality.