Related Experiment Videos
Early endocrine events in induced pregnancies
E Radwanska1, V Maclin, N Rana
1Department of Obstetrics and Gynecology, Rush Medical College, Chicago, Illinois.
International Journal of Fertility
|May 1, 1988
Summary
Lower progesterone levels are linked to higher abortion rates in pregnancies conceived via infertility treatments. Early abnormal human chorionic gonadotropin patterns also indicate potential issues with embryonic development or corpus luteum function.
Area of Science:
- Reproductive Endocrinology
- Clinical Obstetrics
- Infertility Research
Background:
- Progesterone (P) and human chorionic gonadotropin (beta-hCG) are critical for maintaining early pregnancy.
- Infertility treatments, including clomiphene citrate and menotropins (hMG), are widely used to achieve pregnancy.
- Understanding hormonal profiles in these pregnancies is crucial for predicting outcomes.
Purpose of the Study:
- To investigate the relationship between progesterone and beta-hCG levels and pregnancy outcomes in women undergoing infertility treatments.
- To compare hormonal patterns and abortion rates across different conception methods (spontaneous, clomiphene citrate, hMG).
Main Methods:
- Measurement of progesterone (P) and human chorionic gonadotropin (beta-hCG) levels in 141 singleton intrauterine pregnancies.
- Categorization of pregnancies based on conception method (spontaneous, clomiphene citrate, hMG) and outcome (normal pregnancy, abortion).
- Serial or random hormonal level analysis and comparison between subgroups.
Main Results:
- Higher abortion rates were observed in pregnancies conceived with menotropins (31%) compared to clomiphene citrate (19%) and spontaneous cycles (13%).
- Significantly lower mean progesterone levels were found in pregnancies that ended in abortion across spontaneous and clomiphene citrate groups.
- Abnormal early beta-hCG patterns were noted in a majority of abortions in the clomiphene citrate and spontaneous groups, suggesting developmental issues.
Conclusions:
- Deficient corpus luteum function or defective embryonic development may contribute to abortions in pregnancies conceived via infertility treatments.
- Progesterone levels appear to be a significant indicator of pregnancy viability, particularly in cycles not involving hMG.
- Further research is needed to clarify the role of hormonal fluctuations in hMG-conceived pregnancies, as progesterone levels did not significantly differ between normal and aborted outcomes in this group.