取卵後2h內冷凍可提高卵子保存率

取卵後2h內需冷凍，可提高卵子保存率，解凍後植入懷孕率達39%
解凍後3h內施行ICSI，可提高卵子受孕率

http://humrep.oxfordjournals.org/content/23/8/1771.full

Table I.

Clinical results of ICSI using oocytes frozen at different times after retrieval.

	Total (93 thawing cycles)	Group A (26 thawing cycles)	Group B (37 thawing cycles)	Group C (30 thawing cycles)	P-value
Mean female age (SE) at oocyte retrieval	34.9 ± 0.4	34.4 ± 0.7	36.0 ± 0.6	34.1 ± 0.7	0.018*
Transfers performed	83	23	33	27
Clinical pregnancies	16	9	3	4
Gestational sacs	19	10	5	4
Clinical pregnancy rate per transfer	19.3%	39.1%	9.1%	14.8%	NS
Implantation rate	9.6%	18.5%	6.8%	5.6%	NS
Abortions	5	2	0	3
Ectopic pregnancies	1	0	0	1
Gestational sacs without FHB	2	2	0	0
Abortion rate	31.3%	22.0%	0.0%	75.0%	NS
Live births	10	5	5	0
Ongoing pregnancies	1	1	0	0