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Erschienen in: Archives of Gynecology and Obstetrics 6/2014

01.06.2014 | Gynecologic Endocrinology and Reproductive Medicine

Natural cycle IVF: evaluation of 463 cycles and summary of the current literature

verfasst von: Sabine Roesner, Ulrike Pflaumer, Ariane Germeyer, Markus Montag, Thomas Strowitzki, Bettina Toth

Erschienen in: Archives of Gynecology and Obstetrics | Ausgabe 6/2014

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Abstract

Purpose

Natural cycle (NC) IVF/ICSI has proven to be an alternative to conventional IVF/ICSI cycles.

Methods

Within our retrospective, observational study (n = 159) infertile couples underwent (n = 463) cycles of NC-IVF/ICSI from May 2007 until December 2011. Oocyte pick-up was performed within a pure natural cycle excluding any hormonal stimulation except of hCG for ovulation induction. Oocytes were fertilized by IVF/ICSI and embryo transfer took place 2 or 3 days later. In addition, the current literature was analysed concerning pregnancy rates in NC-IVF/ICSI cycles.

Results

Oocyte pick-up was performed in n = 463 NC and was successful in n = 342 cases (IVF n = 135, ICSI n = 207). 203 oocytes were fertilized (IVF n = 87, ICSI n = 116, FR 59.4 %) and lead to 192 embryo transfers. Finally, 25 pregnancies were reached (PR 13.0 % per transfer) resulting in four biochemical pregnancies, 7 (33.3 %) miscarriages, one pregnancy of unknown outcome and 13 live births. Within the current literature (n = 27 studies), PR in NC-IVF/ICSI cycles varied between 10.2 and 50 %.

Conclusions

Within our study, pregnancy rates in pure NC-IVF/ICSI remained below 15 %. Although this may be linked to unfavourable preconditions like patients’ age >40 years, low ovarian reserve or long duration of infertility, further improvement is necessary to increase pregnancy rates.
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Metadaten
Titel
Natural cycle IVF: evaluation of 463 cycles and summary of the current literature
verfasst von
Sabine Roesner
Ulrike Pflaumer
Ariane Germeyer
Markus Montag
Thomas Strowitzki
Bettina Toth
Publikationsdatum
01.06.2014
Verlag
Springer Berlin Heidelberg
Erschienen in
Archives of Gynecology and Obstetrics / Ausgabe 6/2014
Print ISSN: 0932-0067
Elektronische ISSN: 1432-0711
DOI
https://doi.org/10.1007/s00404-013-3123-2

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