ENDOMETRIAL THICKNESS - A PREDICTOR OF IMPLANTATION IN OVUM RECIPIENTS

In a retrospective study, the relationship between endometrial thickne ss and pregnancy rate has been studied in 59 ovum recipient women. Tra nsvaginal ultrasound assessment of endometrial thickness was performed immediately prior to ovum transfer: 19 pregnant recipients had a mean endometrial thickness of 10.24 mm +/- 2.63 SD, 40 nonpregnant recipie nts had an endometrial thickness of 8.62 mm +/- 3.49 SD (t = 1.805, P = 0.0382). Only two pregnancies occurred in 15 recipients with an endo metrial thickness <7.5mm, and none when the endometrial thickness was <5 mm. Our results indicate that endometrial thickness is related to t he functional receptivity of the endometrium.