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Bleeding and spontaneous abortion after therapy for infertility
K Pezeshki1, J Feldman, D E Stein
1Division of Reproductive Endocrinology and Infertility, Maimonides Medical Center, Brooklyn, New York 11219, USA.
Fertility and Sterility
|September 26, 2000
Summary
Early pregnancy bleeding after infertility treatment does not increase spontaneous abortion (SAB) risk overall. However, bleeding is a significant predictor of SAB, especially in women under 35.
Area of Science:
- Reproductive medicine
- Obstetrics and Gynecology
- Perinatology
Background:
- Infertility treatments aim to achieve pregnancy but carry potential risks.
- Early pregnancy bleeding is a common concern with uncertain prognostic implications.
- Understanding the relationship between infertility treatments, bleeding, and pregnancy outcomes is crucial.
Purpose of the Study:
- To determine spontaneous abortion (SAB) rates after various infertility treatments.
- To assess the predictive value of early pregnancy bleeding for SAB.
- To compare outcomes in treated vs. naturally conceived pregnancies.
Main Methods:
- Historic cohort study of 418 women with 500 clinical pregnancies.
- Grouped pregnancies by conception method: ovulation induction, IVF, other treatments, and natural conception (control).
- Monitored for early pregnancy bleeding and recorded pregnancy outcomes (SAB, ectopic, ongoing).
Main Results:
- Spontaneous abortion (SAB) rates did not differ significantly among infertility treatment groups.
- SAB occurred more frequently in pregnancies with bleeding (30.8%) compared to those without (19.8%).
- Early pregnancy bleeding predicted SAB in women under 35 years old (odds ratio 2.4).
Conclusions:
- Women conceiving via infertility treatments have similar SAB risks to naturally conceiving women.
- Previous infertility diagnosis or treatment type did not influence SAB occurrence.
- Early pregnancy bleeding is associated with a doubled relative risk of SAB, particularly in younger women.