Scanning the Meiotic Spindle in Assisted Reproductive Techniques to Assess Oocyte Quality

In patients older than 35 years and younger than 40 years, we will use a microscope with a polarizing filter to evaluate the position of meiotic spindles and polar bodies in oocytes collected from patients who were indicated for IVF and ICSI. Using an optical microscope with a Nikon CEE GmbH polarizing filter, the angle between PB and MS together with MS visibility will be determined.

ICSI will be performed according to standard protocol using ICSI/holding micropipettes (#002-5-30/#001-120-30, Microtech IVF, Czech Republic), polyvinylpyrrolidone (ICSI™, Vitrolife, Sweden), and Eppendorf (Hamburg, Germany) micromanipulation system equipped with thermoplate (Tokaohit, Japan). The oocytes will be cultivated individually, and their order preserved, so that the other outcomes (data from timelapse, clinical results) can be associated with individual oocytes. Oocytes will be denuded (HYASE-10X™, Vitrolife, Sweden) after OPU, and the maturation stage will be examined.