Manifestation Vaginal bleeding companied with abdominal pain Mild type abruptions 1/3, apparent vaginal bleeding Severe type abruption >1/3, large retroplacental hematoma, vaginal bleeding companied by persistent abdominal pain, tenderness on the uterus, change of fetal heart rate shock and renal failureManifestation • Vaginal bleeding companied with abdominal pain • Mild type abruption≤ 1/3, apparent vaginal bleeding • Severe type abruption > 1/3, large retroplacental hematoma, vaginal bleeding companied by persistent abdominal pain, tenderness on the uterus, change of fetal heart rate. shock and renal failure