Sonographic assessment of the endometrium in patients undergoing in vitro fertilization.

Sonography has an important role in the care of infertile patients undergoing in vitro fertilization. Unlike the ovarian follicle, sonographic changes in the endometrium during induction have not been extensively investigated. To determine whether changes in endometrial thickness or changes in endometrial texture would predict subsequent pregnancy, a randomized, double-blind review of 320 studies was performed. None of the endometrial patterns nor any particular change from one pattern to another during induction was predictive of subsequent pregnancy. Although differences in endometrial thickness between non-pregnant and subsequently pregnant patients were noted, on an individual basis, endometrial thickness was not a useful predictor.