What Causes Blood Clots in Placenta?

After decades of research by scientists, it has been found that early placental ablation and hypertension (including pregnancy-induced hypertension syndrome, essential hypertension, renal hypertension), trauma, premature rupture of membranes, age of pregnant women, smoking, use of cocaine, etc. Factors.

Blood clots and pressure marks on the placenta

Placental abruption sometimes has no obvious symptoms and signs. It is only when the placenta is examined postpartum that there are blood clots and pressure marks on the mother's face.

Affected area: Reproductive site
Related diseases: Hypertension placental abruption pregnancy hypertension syndrome premature rupture of membranes essential hypertension
Related symptoms: Irritability, abdominal pain, coagulation dysfunction, pregnancy-induced hypertension, fetal distress, placenta, blood clots on the mother's side, placental abruption, pelvic pelvis

Affiliated Department: Obstetrics and Gynaecology
Related inspections: Simple thrombin generation test

Diagnosis basis

(1) May have a history of trauma and vascular disease.

(2) Vaginal bleeding with abdominal pain.

(3) The uterus has localized mild tenderness, which is in a hypertonic state, and the palace floor is elevated.

(4) Fetal heart weakens or even disappears.

(5) Ultrasound examination showed a liquid dark area between the uterine wall and the placenta. The echo in the amniotic fluid increased and the villous plate protruded to the amniotic cavity.

(6) blood protein is reduced, and coagulopathy may occur.

(7) Examination of placenta during postpartum shows clot and indentation on the mother's face.

1. Light placental abruption of the placenta previa can also be painless vaginal bleeding with no obvious signs. You can confirm the diagnosis by performing a B-mode ultrasound to determine the lower edge of the placenta. Placental abruption in the posterior wall of the uterus, abdominal signs are not obvious, and it is not easy to distinguish it from placenta previa. B-ultrasound can also identify. The clinical manifestations of severe placental abruption are very typical, and it is not difficult to distinguish it from placenta previa.

2. Threatened uterine rupture often occurs during childbirth, with strong contractions, refusal to press the lower abdomen, irritability, a small amount of vaginal bleeding, and signs of fetal distress. The above clinical manifestations are difficult to distinguish from severe placental abruption. However, the threatened uterine rupture often has a history of cephalic pelvis, delivery obstruction or cesarean section. Examination can reveal pathological constriction of the uterus, urinary catheterization with gross hematuria, etc., and placental abruption is often a patient with severe PIH. The pattern is hard.