Secondary infertility associated with a uterine niche after cesarean section
The frequency of abdominal delivery remains high and does not tend to decrease. This may lead to an increase in the number of complications associated with cesarean section, such as uterine niche. Considering the fact that literature data on uterine form of secondary infertility in patients with niches is lacking, and taking into account our own experience and observations made during laparoscopic and hysteroscopic metroplasty, we believe that it is necessary to discuss hypothetical mechanisms underlying the effects of uterine niches on: (1) natural embryo implantation or during an IVF program; (2) embryo survival (embryotoxicity); (3) quality and survival of spermatozoa (spermatoxicity). It is also important to analyze the psychological factor that decreases fertility in these patients.