玻璃化冷凍懷孕率達36%

胚胎玻璃化冷凍優於慢速冷凍
懷孕率達36%，類似新鮮胚胎懷孕率

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3463664/

Table 3

Assisted reproduction outcomes of fresh cycles, slow freezing and vitrification

Parameters	Fresh cycle	Slow freezing	Vitrification	P-value (Fresh vs. Slow)	P-value (Fresh vs. Vitrification)	P-value (Slow vs. Vitrification)
General clinical data
Embryos Transferred	2.2±0.9	2.9±0.90	2.6±0.7	0.07	0.23	0.45
Implantation rate (%)	298/1448(20.6)	48/334(14.4)	142/719(19.8)	0.010α’	0.651	0.035
Clinical pregnancy rate (%)	239/657(36.4)	39/151(25.8)	109/300(36.3)	0.014α’	0.989	0.025
Multiple pregnancy rate(%)	58/657(8.8)	9/151(6.0	29/300(9.7)	0.249	0.675	0.181
Live birth (LB) rate (%)	225/657(34.3)	35/151(23.2)	106/300(35.3)	0.009α’	0.743	0.009α’
Loss of pregnancy
Early abortion rate(%)	23/239(9.6)	3/39(7.7)	18/109(16.5)	0.701	0.064	0.175
Late abortion rate(%)	15/239(6.3)	3/39(7.7)	2/109(1.8)	0.739	0.075	0.082
Induced abortion rate(%)	2/239(0.8)	1/39(2.6)	0	0.895	1.000	0.264
Ectopic pregnancy rate(%)	9/239(3.8)	0	4/109(3.7)	0.619	1.000	0.573
Mode of delivery
Spontaneous vaginal delivery rate(%)	34/190(17.9)	5/32(15.6)	6/85(7.1)	0.755	0.019	0.157