Natural Cycle Versus Endometrial Preparation for Healthy Blastocyst Transfer

The Clinical Results After Frozen-thawed Healthy Blastocyst Transfer in Natural Cycle Versus Cycle With Endometrial Preparation

This study evaluates the difference in pregnancy rate transferring a healthy blastocyst in natural or artificial cycle.

The aim of the study was to verify the implantation capacity and ongoing pregnancy rate of vitrified warmed euploid blastocyst in natural cycle versus endometrial artificial cycle with gonadotropin-releasing hormone (GnRH-agonist) pituitary suppression.

Inclusion Criteria:

• frozen-thawed healthy blastocyst

Exclusion Criteria:

• post thawed not survival healthy blastocyst