Pregnancy of Unknown Origin

Question 1

What is a pregnancy of unknown origin?

Answer 1

Positive pregnancy test, but there are no signs of an intrauterine or extrauterine pregnancy on transvaginal ultrasound.

Question 2

What are 3 main causes for a pregnancy of unknown origin?

Answer 2

1. An early viable or failing intrauterine pregnancy
2. A complete miscarriage
3. An ectopic pregnancy

Question 3

What are the main differentials for a pregnancy of unknown origin?

Answer 3

1. Early viable or failing intrauterine pregnancy
   Signs and symptoms: Mild cramping, spotting or delayed menstruation.
2. Complete miscarriage
   Signs and symptoms: Severe abdominal pain, heavy bleeding, passage of tissue or clot-like material.
3. Ectopic pregnancy
   Signs and symptoms: Sharp or stabbing pain in the abdomen, light vaginal bleeding, dizziness or fainting.