Table 1.

Survival and in vitro maturation (IVM) rate, fertilization and cleavage rate of vitrified oocytes after or before in vitro-maturation

	IVM before vitrification (group 1)	IVM after vitrification (group 2)
Oocytes included (n)	100 (68 GV and 32 MI)	84 (52 GV and 32MI)
Oocytes vitrified (n)	46	84
Oocytes survived (n)	40/46 (86.9%)	71/84 (84.5%)
In vitro matured oocytes/oocytes included	46/100 (46%)*	20/84 (23.8%)*
Mature oocytes inseminated by ICSI/ oocytes included	40/100 (40%)**	20/84 (23.8%)**
Fertilization rate/oocytes injected	21/40 (52.5%)	9/20 (45%)
Fertilization rate/oocytes included	21/100 (21%)	9/84 (11%)
Cleaved embryos/oocytes fertilised	11/21 (52.4%)	5/9 (55.5%)
Cleaved embryos/oocytes injected	11/40 (27.5%)	5/20 (25%)
Developed blastocysts	0	0

^*p<0.01; ^**p<0.05