Based on a recent study, published in Fertility and Sterility in July 2022 (Druckenmiller Cascante et al., 2022), the age at cryopreservation and the number of mature oocytes thawed were predictive of live birth.
The number of mature oocytes thawed affects the final live birth rate. For instance, patients who had less than 10 mature oocytes thawed, had a lower final live birth rate than those who had more than 10 mature oocytes thawed. Patients younger than 38 years old who had more than 20 mature oocytes thawed, had a higher live birth rate than those who had less than 20 oocytes thawed.
Conclusions:
The younger the patient was at the time of oocyte cryopreservation, the higher the chance of live birth. In addition, patients with more than twenty mature oocytes thawed had higher live birth rates than those with fewer oocytes thawed.
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