Abstract
Without stimulation, IVF in natural or modified natural cycles (IVF-NAT) offers an interesting alternative to controlled ovarian hyperstimulation for some patients. This protocol may be proposed to patients suffering from altered ovarian status with encouraging results. The second indication might be patients presenting with repeated implantation failure. IVF-NAT allows possible adverse effects of controlled ovarian hyperstimulation on the endometrium to be avoided. Results of clinical pregnancy rate per oocyte retrieval for altered ovarian status and implantation failure are 15.4 and 16.6%, respectively, and 25.5 and 26.3%, respectively, over three cumulative cycles. This treatment is less expensive and patient friendly.
Financial & competing interests disclosure
The authors have no relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript. This includes employment, consultancies, honoraria, stock ownership or options, expert testimony, grants or patents received or pending, or royalties.
No writing assistance was utilized in the production of this manuscript.