Dados do Trabalho

Title

Implantation potential when transferring morula stage embryos

Objective

To evaluate the implantation rate when embryo transfer was performed at the morula stage.

Methods

30 cases were analyzed, from February 2022 to May 2023, in which 30 transfers were performed, with an average of 1.7 embryos per transfer. The mean age of the patients was 37.7 years. In the study, only transfers with embryos in the morula stage were considered.

Results

Among the analyzed cases, there was a 48% implantation rate for transfers performed on D4. Patients younger than 36 years had a higher implantation rate (66.7%) when compared to the group of patients older than 36 years (35.2%), who also transferred morulas, regardless of the number of embryos transferred. The embryos had been previously vitrified on the third day of culture after ICSI (INTRA CYTOPLASMIC SPERM INJECTION), and the transfer was performed 24 hours after devitrification.

Conclusion

The transfer of embryos in the morula stage, that is, in the stage that precedes the blastocyst stage, can be considered a viable option, as it demonstrates good results. It is noteworthy that the conduct regarding the stage of the embryo for transfer is a clinical decision, which should take into account the couple's history, based on individual circumstances.

Keywords

Morula, embryo transfer, assisted reproduction, ICSI.