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. 2017 Apr 9;16(2):196-199.
doi: 10.1002/rmb2.12031. eCollection 2017 Apr.

Effects of endometrial injury on frozen-thawed blastocyst transfer in hormone replacement cycles

Yukiko Matsumoto  1 , Shoji Kokeguchi  1 , Masahide Shiotani  1
Affiliations

Effects of endometrial injury on frozen-thawed blastocyst transfer in hormone replacement cycles

Yukiko Matsumoto et al. Reprod Med Biol. .

Abstract

Aim: To evaluate whether local endometrial injury would improve the pregnancy rates after frozen-thawed blastocyst transfer in cycles with hormone replacement.

Methods: Seventy-seven patients who were aged <40 years with a history of at least three unsuccessful embryo transfers and who underwent frozen-thawed blastocyst transfer during hormone replacement cycles between February and June, 2013 were studied. They were allocated into two groups based on the last digit of their clinical record number: an experimental group (n=22), excluding patients who withheld consent or who were unable to undergo treatment, and a control group (n=55). In the experimental group, the endometrium was scratched once with an endometrial sampler during the luteal phase of the cycle preceding the embryo transfer.

Results: There was no significant difference in the baseline characteristics between the groups. The clinical pregnancy rate was 6% in the experimental group and 22% in the control group. Among these, the ongoing pregnancy rate was 100% in the experimental group and 50% in the control group.

Conclusion: Endometrial injury might increase the pregnancy rates after frozen-thawed blastocyst transfer and decrease the risk of miscarriage in patients with a history of unsuccessful embryo transfers.

Keywords: blastocyst transfer; endometrium; endometrium sampler; injury; pregnancy rate.

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Figures

Figure 1
Figure 1
Clinical pregnancy rates in the scratch and control groups. The rate was significantly higher in the scratch group (46% vs 22%, respectively; P=.038)
Figure 2
Figure 2
Ongoing pregnancy rate in the scratch and control groups. The rate was significantly higher in the scratch group (100% vs 50%, respectively; P=.032)
Figure 3
Figure 3
Endometrial tissue biopsy that was obtained from a patient by using an endometrial sampler, stained with hematoxylin and eosin (magnification ×40). The sampled tissues were distributed throughout the superficial part of the endometrium, limited to the functional zone, and did not reach the basilar zone
See this image and copyright information in PMC

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