An analysis of 400,135 fertilization cycles in vitro (IVF) carried out by experts from the University of Birmingham (England), has revealed that doctors should try to recover near 15 ovules of a woman's ovaries in a single cycle of an assisted reproduction process to maximize the chances of getting a healthy baby.

Fifteen could be the number of ovules to target in an 'in vitro' fertilization cycle to maximize the chances of achieving a live birth

This work, which has been published in the web version of Human Reproduction, has shelled the relationship between the percentage of births of babies born alive and the number of eggs that are recovered in a cycle, thus, it seems that the rate of births successfully grows when they get up to about 15 ovules; it is balanced between 15 and 20 ovules, and steadily drops above 20 (figure in which the risk of ovarian hyperstimulation appears).

The authors of this research have created a chart that can be used by both doctors and those interested in undergoing this type of treatment in order to specify the level of ovarian stimulation necessary to reach that magic number of eggs that allow you to become pregnant.


How Eggs Are Harvested for IVF | Infertility (November 2019).