Day 3 embryo quality predicts clinical pregnancy and live birth rates following single frozen-thawed poor-quality blastocyst transfer.

Key Points

• To determine how Day 3 embryo quality influences pregnancy outcomes after transferring poor-quality blastocysts.
• Analyzed clinical pregnancy rates following frozen-thawed blastocyst transfers.
• Compared Day 3 embryo quality during selection of blastocysts for transfer.
• Evaluated the relationship between embryo quality and live birth outcomes.
• Day 3 embryo quality significantly predicts clinical pregnancy rates.
• Higher-quality Day 3 embryos lead to improved live birth rates even in poor-quality transfers.