Abstract
The live birth rate is the most important parameter of success in IVF therapy. However, there is controversy about what it should be related to. In conventional IVF, the live birth rate is most often related to embryo transfer, however, other possible reference variables, such as the duration of IVF therapy, the number of consultations, the risks for mother and child and the total costs per pregnancy achieved, might be alternative variables. For natural cycle IVF (NC-IVF) or minimal stimulation IVF, such alternative variables should be considered.
The success rates and thus the choice of therapy depend essentially on the prognostic factors. If the prognostic factors are good (e.g. younger woman and short duration of infertility), NC-IVF therapy can be chosen as first line therapy because of the high success rate. However, if the prognostic factors are poor (e.g. an older woman) and if the ovarian reserve is still high, conventional IVF therapy should be chosen.
After the transfer of approx. five day 2–3 embryos, the success rate gradually decreases, and IVF therapy with a higher oocyte yield should be chosen. Furthermore, causes for recurrent implantation failure should be excluded.
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von Wolff, M., Magaton, I. (2022). Success Rates of Natural Cycle and Minimal Stimulation IVF. In: von Wolff, M. (eds) Natural Cycle and Minimal Stimulation IVF . Springer, Cham. https://doi.org/10.1007/978-3-030-97571-5_19
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