最理想ㄉ卵子直徑為100-120um

太大太小都會影響懷孕率

Reproductive Sciences volume 28, pages904–908 (2021)

Can Oocyte Diameter Predict Embryo Quality?

• whether oocyte diameter might predict the quality of the developing embryo. A retrospective, single-center cohort study. 
• Oocytes were grouped by mean oocyte diameter (MOD) and incubated for 5 days before the final morphological evaluation done by an expert embryologist. 
• A total of 471 cycles which yielded 3355 metaphase II oocytes were included in the analysis. 
• Embryos developed from oocytes with MOD close to the average (Average 1SD < MOD < Average + 1SD) had increased good-quality blastulation rates compared with embryos that developed from very small or very large oocytes. 
• Oocytes with MOD between 105.96 and 118.69 μm have better probability of becoming top-quality D5 blastocysts (17.1-17.4% grade 1 embryos).