Patient's question:
Detailed medical condition and consultation purpose: Vaginal bleeding at 70 days of pregnancy, no fetal heartbeat detected on ultrasound, no embryonic sac found after medication abortion, placenta has already formed, the gestational sac is empty. Why is this happening and what factors are involved?Doctor's answer:
Hello:(1) Maternal factors: Conditions such as heart disease, heart failure, high fever, acute blood loss, severe anemia, and the use of anesthetics in pregnant women can lead to insufficient blood volume, causing fetal hypoxia.
(2) Uterine factors: Excessive or frequent uterine contractions, even tetanic contractions, can impair uterine blood circulation, leading to fetal hypoxia.
(3) Fetal factors: Conditions such as placental abruption, placenta previa, preeclampsia, postterm pregnancy, and chronic nephritis can cause placental circulatory disorders, resulting in fetal hypoxia.
(4) Cord factors: Knotting, prolapse, or wrapping of the umbilical cord around the neck or body can obstruct blood flow through the umbilical vessels, causing fetal hypoxia.
(5) Fetal factors: Cardiovascular system dysfunction, intracranial hemorrhage, fetal malformations, and incompatibility of maternal and fetal blood types.