Transvaginal ultrasound-guided embryo transfer improves outcome in patients with previous failed in vitro fertilization cycles.

Objective: To determine the effect of transvaginal ultrasound-guided ET in IVF cycles performed on patients who had previously failed to conceive from IVF and compare the results to previous cycles where ultrasound guidance was not used.

Design: Retrospective clinical study.

Setting: Private practice IVF program.