Vaginal bleeding at 20 weeks of pregnancy may be due to pre-eclampsia, placenta previa status, placental abruption, etc.
1. Pre-eclampsia: If a pregnant woman develops Toxoplasma gondii infection or high fever during pregnancy, it may lead to pre-eclampsia, which is mainly manifested by vaginal bleeding and usually accompanied by abdominal pain.
2. Placenta previa: The placenta previa found by ultrasonography in the middle of pregnancy is called placenta previa. The main manifestation is painless vaginal bleeding without any cause, and some of them may lead to miscarriage because of excessive bleeding.
3. Placental abruption: It refers to the partial or total detachment of the placenta from the uterine wall in its normal position after 20 weeks of pregnancy before delivery of the fetus. Typical clinical manifestations of vaginal bleeding after 20 weeks of pregnancy, abdominal pain, can be accompanied by increased uterine tension and uterine pressure, severe hemorrhagic shock, diffuse intravascular coagulation, if not handled in a timely manner can endanger the life of the mother and child.
Pregnant women 20 weeks pregnant vaginal bleeding, may also be cervicitis, cervical polyps, vaginitis and other causes, should go to the hospital in a timely manner to consult, clear the cause of standardized treatment later.