Studies have shown that the follicles greater in diameter was most likely to have a mature
oocyte that was capable of fertilization and best suited for development into a high-quality
embryo. Smaller follicles showed lower rates ( 60%).
Lately new triggering protocols have emerged aiming to improve the proportion of mature
oocytes at the time of retrieval. The aim of this study is to learn the effects of the dual
triggering compared to the standard hCG triggering on the oocyte development and quality as a
function of the follicle size