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Maternal serum alpha-fetoprotein levels in ectopic pregnancy
I Stabile1, F Olajide, T Chard
1Joint Academic Unit of Obstetrics, Gynaecology, and Reproductive Physiology, London Hospital Medical College, Whitechapel, UK.
Human Reproduction (Oxford, England)
|October 1, 1989
Summary
Maternal serum alpha-fetoprotein (AFP) levels are often normal in ectopic pregnancies. However, elevated AFP may indicate a live fetus in ectopic cases, warranting further investigation.
Area of Science:
- Reproductive Medicine
- Obstetrics
- Maternal-Fetal Medicine
Background:
- Ectopic pregnancy is a significant cause of maternal morbidity.
- Alpha-fetoprotein (AFP) is a biomarker typically used in prenatal screening.
- The role of AFP in diagnosing ectopic pregnancy is not well-defined.
Purpose of the Study:
- To investigate the utility of maternal serum alpha-fetoprotein (AFP) levels in women with ectopic pregnancy.
- To determine the correlation between AFP levels and pregnancy viability in ectopic gestations.
Main Methods:
- Maternal serum AFP levels were measured at presentation in 44 women with confirmed ectopic pregnancies.
- AFP levels were compared against the normal reference range for gestational age.
- Ultrasonography findings, including the presence of a live fetus, were recorded.
Main Results:
- In 32 out of 44 women (72.7%), serum AFP levels were within the normal reference range.
- Eleven women (25%) presented with AFP levels above the 90th percentile.
- Five of these eleven women with elevated AFP had a live fetus detected ultrasonically.
- Women with ovarian or cornual pregnancies had AFP levels below the median for their gestational age.
Conclusions:
- Maternal serum AFP levels are frequently normal in ectopic pregnancies.
- Elevated AFP levels in ectopic pregnancy may suggest the presence of a viable fetus.
- AFP measurement alone is insufficient for diagnosing ectopic pregnancy but may offer adjunctive information in specific cases.