第三产程中胎盘剥离过程的动态超声观察  

Observation of course of placental separation by continuous dynamic ultrasonography during third stage of labor

作　　者：蔡祥莺[1] 何成章[1] 冯佩珍[1] 陆英华[1] 王锡梅[1] 王元[1] 黄文琴[1] 

机构地区：[1]江苏省无锡市第四人民医院妇产科,214062

出　　处：《中华妇产科杂志》2003年第4期213-215,i001,共4页Chinese Journal of Obstetrics and Gynecology

摘　　要：目的　探讨第三产程中胎盘剥离的生理过程和适宜时间。方法　应用彩色超声诊断仪 ,观察第三产程中胎盘剥离过程的动态变化 ;以称重法计算产后 2h内的出血量。结果　第三产程中胎盘剥离过程可分为 4个时期 :潜伏期、收缩期、分离期、排出期 ;各期持续时间为 :潜伏期 (4 37±3 78)min ,收缩期 (1 4 8± 0 97)min ,分离期 (0 5 0± 0 0 0 )min ,排出期 (0 6 2± 0 2 3)min。约 85 %的产妇第三产程均在 10min以内结束 ,平均 6 94min。第三产程超过 10min者 ,阴道出血量显著增加 (P <0 0 1) ,发生各种并发症的危险性也相应增加。结论　为预防产后出血 ,第三产程以不超过 10min为宜。Objective To investigate the physiologic course of third stage of labor, and to judge the optimal time of natural placental separation permitted. Methods To observe and record the course of third stage of labor by continuous dynamic ultrasonography and to estimate the total amount of blood loss from placental separation within two hours after delivery by the method of weighing lost blood. Results Third stage of labor can be divided into four phases: the latent phase (4.37±3.78) min, the contraction phase (1.48±0.97) min,the detachment phase (0.50±0.00) min, and the expulsion phase (0.62±2.23) min. In 85% of the puerperas the third stage of labor takes about 10 minutes(average 6.94 minutes).The amount of postpartum hemorrhage and the risk of the patient increased prominently if the time of stage of labor was longer than 10 minutes ( P <0.01 ).Conclusion The third stage of labor must be limited in 10 minutes to prevent postpartum hemorrhage.

关 键 词：第三产程 胎盘剥离 动态超声观察 彩色超声诊断仪 

分 类 号：R714.4[医药卫生—妇产科学]