Classification of Abortion
Type | Definition |
|---|---|
Early | Abortion before 12 weeks gestation |
Late | Abortion between 12 and 20 weeks gestation |
Spontaneous | Pregnancy loss at < 20 weeks gestation |
| Vaginal bleeding occurring before 20 weeks gestation without cervical dilation |
| Vaginal bleeding or rupture of the membranes before 20 weeks gestation accompanied by advanced dilation of the cervix |
| Dilation of cervix and expulsion of some products of conception |
| Closed cervix after expulsion of all products of conception |
| Death of an embryo or a fetus is confirmed, but there is no bleeding or cervical dilation and the products of conception have not been expelled |
| Nonviable pregnancy with a gestational sac, but with no yolk sac or embryo visualized on transvaginal ultrasonography |
| ≥ 2 to 3 spontaneous abortions |
Induced | Interruption of pregnancy with medications or a procedure |
Septic | Serious infection of the uterine contents during or shortly before or after an abortion |