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[Endometrial thickness. Prognostic factor in assisted reproduction?]
Manuel Leal Almeida1, Eric Saucedo de la Llata, Victor Batiza Resendiz
1Instituto para el Estudio de la Concepción Humana, Centro de Ginecología y Obstetricia de Monterrey, SA
Ginecologia Y Obstetricia De Mexico
|August 18, 2004
Summary
For frozen embryo transfers, an endometrial thickness over 8 mm predicts a higher pregnancy rate. This finding is crucial for optimizing fertility treatments and improving success rates in assisted reproduction.
Area of Science:
- Reproductive endocrinology and infertility.
- Medical imaging in obstetrics and gynecology.
Background:
- Endometrial thickness is a key factor in assisted reproductive technologies.
- A threshold of 8 mm is often considered critical for pregnancy success.
Purpose of the Study:
- To evaluate the prognostic value of endometrial thickness measured by vaginal ultrasound.
- To assess its impact on pregnancy rates in frozen embryo transfer (FET) and ovum donation (OD) cycles.
Main Methods:
- Retrospective and comparative analysis of 100 FET cycles and 71 OD cycles.
- Patients were categorized based on endometrial thickness: ≤8 mm and >8 mm.
Main Results:
- In FET cycles, pregnancy rates were 14.7% (≤8 mm) vs. 37% (>8 mm), a significant difference (p < 0.01).
- No significant difference in pregnancy rates was observed in OD cycles (47% for ≤8 mm vs. 40% for >8 mm).
- Patient age was a significant factor in FET outcomes (p = 0.009).
Conclusions:
- Endometrial thickness >8 mm is a significant predictor of pregnancy in frozen embryo transfer cycles.
- This measurement may aid in patient counseling and treatment planning for FET.