The Impact of Endometrial Preparation on Implantation following Cryopreserved-Thawed-Embryo Transfer

Authors:
  • SFShevach Friedler
    Shevach Friedler
  • MNMichal Neiger
    Michal Neiger
  • ALAby Lewin
    Aby Lewin
  • JSJoseph G. Schenker
    Joseph G. Schenker
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Abstract
The efficacy of three protocols of endometrial preparation (spontaneous cycles, A: artificial preparation, B; ovarian stimulation, C) for cryopreserved-thawed human embryo transfer (CT-ET). The implantation and clinical pregnancy rates per cycle in 236 women undergoing 381 consecutive CT-ETs were evaluated according to the endometrial preparation protocol. No statistically significant difference was found in implantation rates per embryo transfer (A = 5.6%, B = 5.6%, C = 4.6%) and clinical pregnancy rates per cycle (A = 16.9%, B = 16.5%, C = 15.6%) between the three endometrial preparation protocols used. In conclusion, the specific method of endometrial preparation for CT-ET had no significant impact upon the implantation rate.