Vitrification of Human Germinal Vesicle Oocytes:
before or after In Vitro Maturation?
The use of immature oocytes derived from stimulated cycles could be of
great importance, particularly for urgent fertility preservation cases. The current study
aimed to determine whether
Materials and Methods
This prospective study was performed in a private
There was no significant difference in the survival rate after vitrification and
warming of GV (93.5%) and MII oocytes (90.8%). A significantly higher maturation rate
occurred when IVM was performed before vitrification (82.9%) compared to after vitrification (51%).
There was no significant difference in the incidence of normal spindle/
chromosome configurations among warmed oocytes matured
In stimulated cycles, vitrification of