During the phase of receptivity, the endometrium under goesmorphological, cytoskeletal, biochemical, and genetic changes to becomefunctionally competent. The endometrium is unique in its ability to blockembryos from implanting, except during this narrow window of receptivity.
Endometrial assessment has been performed usually by endometrial biopsy.
However, such an invasive method is not acceptable. Therefore, endometrial receptivity should be ideally evaluated before implantation by a non-invasive method. Transvaginal ultrasonography may represent, theoretically, such an ideal non-invasive technique.
It was suggested that pregnancy outcome is closely related to decreased
endometrial thickness (endometrial compaction). It is hypothesized that the change in endometrial thickness between the day of trigger and the day of embryo transfer may be more important to predict pregnancy outcome than the absolute measure of endometrial thickness at the time of embryo transfer.
Aim of the Work:
The aim of this study was to evaluate impact of endometrial compaction from day of trigger to day of embryo transfer on pregnancy outcomes in patients undergoing intracytoplasmic sperm injection consist of fresh embryo transfer after ovarian hyperstimulation using antagonist protocol.