A 24-year-old primigravida at 8 weeks gestation reports painless vaginal spotting for two days. Speculum examination shows blood in the vault, the internal cervical os is closed, and transvaginal ultrasound demonstrates a live intrauterine fetus matching dates. What is the diagnosis?
- A Inevitable abortion
- B Threatened abortion ✓
- C Missed abortion
- D Incomplete abortion
Correct answer: B. Threatened abortion
Explanation
Threatened abortion is defined as vaginal bleeding before 20 weeks with a closed internal os and a viable fetus, exactly the findings here. Inevitable abortion features an open internal os with a live or nonviable gestation, missed abortion is a nonviable retained gestation with a closed os, and incomplete abortion requires partial expulsion of products with an open os. About half of threatened abortions continue successfully to term.
Reference: Williams Obstetrics, 26th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.