Clinical value of early cleavage embryo

Area of Science:

• Reproductive Medicine
• Embryology
• In Vitro Fertilization

Background:

• Assisted reproductive technologies aim to optimize pregnancy outcomes.
• Embryo selection is crucial for successful in vitro fertilization (IVF).
• Early cleavage stage embryos are a key focus in IVF protocols.

Purpose of the Study:

• To determine if embryo transfer involving early cleavage embryos improves clinical pregnancy rates.
• To compare the implantation and clinical pregnancy rates between cycles with and without early cleavage embryos.

Main Methods:

• Retrospective review of 258 IVF-ET cycles.
• Group I: No early cleavage embryos (n=160).
• Group II: At least one early cleavage embryo (n=98).
• Early cleavage embryo defined as two blastomeres 24-26 hours post-insemination.
• Statistical analysis using t-test, Mann-Whitney U-test, and Chi-squared test (P<0.05).

Main Results:

• Group II showed significantly higher implantation rates (18.6%) compared to Group I (11.6%).
• Clinical pregnancy rates were significantly higher in Group II (38.8%) versus Group I (25.6%).
• P-values were less than 0.05, indicating statistical significance.

Conclusions:

• Early cleavage embryos demonstrate enhanced implantation potential.
• Embryo transfer cycles including early cleavage embryos result in superior clinical pregnancy rates.
• Identifying and transferring early cleavage embryos is a valuable strategy in IVF.