Thanks to this technique, some couples with low chances of achieving a
natural pregnancy, with no more than 1% of probabilities, may raise their
chances up to 25% for each attempt. This places them at the same level
of those who do not have any reproductive disorders, whose chances for
achieving a natural pregnancy are between 20% and 30% for each attempt.
The chances for success are cumulative, so that an in vitro fertilization
treatment that consists of four successive attempts may raise the chances
up to 70%.
The most important factors that determine the chances for a successful
pregnancy are the woman' s age, the quality of the collected oocytes,
the quality of the sperm, the causes of the infertility and the number
of embryos transferred.
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