Objective To observe the mode of placenta separation by dynamic ultrasonographic imaging during the third stage of labor and help manage postpartum hemorrhage.
目的在第三产程中应用动态超声图像观察胎盘剥离方式，及时处理产后出血。
Objective To observe the mode of placenta separation by dynamic ultrasonographic imaging during the third stage of labor and help manage postpartum hemorrhage.
目的在第三产程中应用动态超声图像观察胎盘剥离方式，及时处理产后出血。
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