IMR Press / CEOG / Volume 32 / Issue 1 / pii/2005004

Clinical and Experimental Obstetrics & Gynecology (CEOG) is published by IMR Press from Volume 46 Issue 1 (2019). Previous articles were published by another publisher on a subscription basis, and they are hosted by IMR Press on as a courtesy and upon agreement with S.O.G.

Open Access Original Research

Non-homogeneous hyperechogenic echo pattern three days after frozen embryo transfer is associated with lower pregnancy rates

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1 The University of Medicine and Dentistry of New Jersey, Robert wood Johnson Medical School at Camden, Cooper Hospital/University Medical Center. Department cif Obstetrics and Gynecology, Division of Reproductive Endocrinology & Inferility, Camden, NJ (USA)
Clin. Exp. Obstet. Gynecol. 2005, 32(1), 15–18;
Published: 10 March 2005

Objective: To evaluate the association of mid-luteal phase echo patterns and pregnancy rates (PRs) following frozen embryo trans­fer (ET). Methods: Sonographic evaluation of endometrial echo patterns was performed three days after ET in the first frozen ET cycle of women <40 years of age who used their own oocytes as well as all donor oocyte recipients. Results: The distribution of echo patterns and clinical PRs were similar in women using their own eggs and women who used donor oocytes; therefore all data was combined. The clinical PR was 49.5% with a hyperechogenic echo pattern vs 38.8% with a non-hyperechogenic pattern, p = 0.007. Conclusion: A larger study of frozen ET and mid-luteal echo pattern now demonstrates conclusions similar to the data from fresh ET in hyperstimulated in vitro fertilization (IYF)-ET cycles in that failure to attain a hyperechogenic echo pattern three days after ET is associated with lower pregnancy rates.

Frozen embryo transfer
Endometrial echo patterns
Mid-luteal sonography
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