| Classification
|
Characteristics
|
OS
|
Fetal Tissue Passage
|
Misc
|
| Threatened
|
Abdominal pain or bleeding; < 20 weeks gestation
|
Closed
|
No
|
If < 11 weeks (with fetal cardiac activity) 90% progress to term. If between 11 and 20 weeks 50% progress to term
|
| Inevitable
|
Abdominal pain or bleeding; < 20 weeks gestation
|
Open
|
No
|
|
| Incomplete
|
Abdominal pain or bleeding; < 20 weeks gestation
|
Open
|
Yes, some
|
|
| Complete
|
Abdominal pain or bleeding; < 20 weeks gestation
|
Closed
|
Yes, complete expulsion of products
|
Distinguish from ectopic based on decreasing hCG and/or decreased bleeding
|
| Missed
|
Fetal death at <20 weeks without passage of any fetal tissue for 4 weeks after fetal death
|
Closed
|
No
|
|
| Septic
|
Infection of the uterus during a miscarriage. Most commonly caused by retained products of conception
|
Open
|
No, or may be incomplete
|
Uterine tenderness and purulent discharge from the OS may be present
|
