Human Reproduction, Vol 12, 2271-2276, Copyright © 1997 by Oxford University Press
J Remohi, G Ardiles, JA Garcia-Velasco, P Gaitan, C Simon and A Pellicer
Adequate endometrial preparation with exogenous steroids is mandatory for
successful ovum donation. This study was undertaken to assess the value of
endometrial thickness by ultrasound and serum oestradiol as predictors of
ovum donation outcome and to analyse the correlation between serum
oestradiol concentrations and the endometrial thickness. Endometrial
thickness and serum oestradiol concentrations on the day of oocyte donation
were recorded and compared to several in-vitro fertilization parameters.
The cycles (n = 465) were classified according to serum oestradiol values
and endometrial thickness. Comparison of the groups showed that endometrial
thickness was significantly (P = 0.002) higher when serum oestradiol was
>400 pg/ml as compared to <100 pg/ml. Pregnancy and implantation
rates did not differ among the groups, women with serum oestradiol <50
pg/ml having similar outcome to the remaining cases. Endometrial thickness
showed a similar picture in terms of pregnancy and implantation. Also,
women with an endometrium <4 mm in size had normal pregnancy and
implantation rates. There was a positive correlation (P = 0.0044) between
endometrial thickness and implantation, as well as between endometrial
thickness and serum oestradiol (P = 0.0184). None of the parameters
examined was able to predict ovum donation outcome. It is concluded that
endometrial thickness is preferred to serum oestradiol for the monitoring
of endometrial development, although neither is able to predict success in
oocyte donation.
ARTICLES
Endometrial thickness and serum oestradiol concentrations as predictors of outcome in oocyte donation
Instituto Valenciano de Infertilidad, Valencia University School of Medicine, Spain.
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