Does first polar body morphology predict oocyte performance during ICSI treatment?

Area of Science:

• Reproductive biology
• Embryology
• Infertility research

Background:

• Intracytoplasmic sperm injection (ICSI) is a key assisted reproductive technology.
• Assessing oocyte quality is crucial for successful ICSI outcomes.
• The first polar body (1 PB) offers a potential window into oocyte health.

Purpose of the Study:

• To investigate the morphology of the first polar body (1 PB) in ICSI patients.
• To determine if 1 PB morphology can predict mature oocyte viability and performance during ICSI.

Main Methods:

• Prospective study of 72 women undergoing ICSI.
• Evaluation of 1 PB morphology (normal vs. fragmented) in retrieved oocytes.
• Tracking oocytes through fertilization, embryo cleavage, and transfer, categorized by 1 PB morphology.

Main Results:

• A total of 553 MII oocytes underwent ICSI, with 176 embryos transferred.
• Clinical implantation and pregnancy rates were significantly correlated with 1 PB morphology.
• Group I (normal 1 PB) had 31% implantation and 61% pregnancy rates, versus Group III (fragmented 1 PB) with 2% implantation and 5% pregnancy rates.

Conclusions:

• 1 PB morphology is associated with mature oocyte viability.
• 1 PB morphology can predict oocyte performance and pregnancy achievement in women undergoing ICSI.
• This finding may aid in optimizing ICSI treatment protocols.