Author(s): Elham Pourmatroud, Mahvash Zargar, Roshan Nikbakht, Parivash Jelodarian*
The objective of this study is to assess the effectiveness of adding urinary LH surge kit to hormonal prepared frozen embryo transfer (FET) cycles. In this prospective clinical trial, 48 patients enrolled in two groups. Endometrial hormone priming in both groups was similar; but in group A, from day 10 of cycle, urinary LH surge detection was started embryo transfer (ET) scheduled after first positive test. In group B, ET was done after reaching endometrium thickness to at least 7 mm. The duration of cycle, the frequency of ultrasound monitoring, the total dosage of estrogen consumption and the result of cycle were measured. The duration of cycle before ET in group A was shorter (8.79 ± 1.14 VS 11 ± 1.47 days, P Value: 0.0005), the number of ultrasound repetition also was lesser (2.42 ± 0.58 VS 3.67 ± 0.86, P Value: 0.001). Respectively, in group A the total dosage estrogen consumption was less than group B (35.58 ± 5.2 VS 46.83 ± 5.27 mg, P value: 0.0005). The pregnancy rate in group A was more than group B, although it was not significantly different (37.5 % VS 25 %, P value: 0.52). It seems except endometrial characters, assurance about the best time for embryo implantation prevent wasting valuable frozen embryo by incorrect timing of thawing and transfer.