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01.12.2017 | Review | Ausgabe 1/2017 Open Access

Reproductive Biology and Endocrinology 1/2017

Dichorionic triplets following frozen-thawed poor-stage embryo transfer: a report of two cases and a review

Reproductive Biology and Endocrinology > Ausgabe 1/2017
Atsushi Yanaihara, Shirei Ohgi, Kenichirou Motomura, Ryoma Taniguchi, Shota Hatakeyama, Takumi Yanaihara



We describe two cases of dichorionic triplet pregnancy after a frozen-thawed poor-stage embryo transfer.

Main body of the abstract

A 39-year-old and a 41-year-old woman underwent ART treatment. The first patient underwent intracytoplasmic sperm injection (ICSI) at 34 years of age, and two frozen-thawed poor-stage embryos were transferred at 39 years of age with assisted hatching, resulting in a trichorionic triamniotic triplet pregnancy. The second patient underwent ICSI, and two poor-grade blastocysts were transferred followed by assisted hatching, resulting in a dichorionic triamniotic triplet pregnancy.
In the first case, the heartbeat of one monozygotic twin fetus had stopped on day 48 post-transfer (9 weeks 2 days), resulting in a dichorionic diamniotic twin pregnancy. A healthy boy and girl were delivered by elective caesarean section at 36 weeks, 5-days gestation. In the second case, the patient underwent selective reduction of the monochorionic twins, resulting in a single pregnancy that was vaginally delivered without any problems at 38 weeks 0-days gestation.

Short conclusions

Numerous factors may be associated with the development of a monochorionic pregnancy; however, controversies still remain. The present morphological grading for embryos is insufficient for inhibiting the development of a monochorionic pregnancy.
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