Patient's question:
I have a history of two miscarriages. Both were around 75 days of pregnancy with vaginal bleeding, and ultrasound tests showed no fetal heartbeat. Please advise on the possible factors or causes.Doctor's answer:
Now recurrent abortion has replaced habitual abortion, defined as two consecutive spontaneous abortions. Each abortion often occurs at the same gestational month, with a clinical course similar to general abortion. Common factors or causes of early abortion include embryonic chromosomal abnormalities, immune factor abnormalities, luteal function insufficiency, and hypothyroidism. Common factors or causes of late abortion include uterine malformation or developmental disorders, cervical incompetence, uterine fibroids, etc. In cases of cervical incompetence, after pregnancy, the cervix often dilates in the second trimester due to fetal growth, increased amniotic fluid, and increased intracavitary pressure. The gestational sac protrudes through the cervical os, and the cervical canal gradually shortens and dilates. Patients often experience no symptoms and, once the membranes rupture, the fetus is rapidly expelled.