Trianglen Fertility Clinic

Results of blastocyst cultures in Mini–incubators

Single Embryo Transfer - Blastocyst results 2010
Age	<40	40-46	All
Mean Age	34		34,5
Number of treatments	16	1	17
Number of pregnant	12	1	13
% pregnant	75		77
% with fetal heart rate	63		65
Number with multiple fetus	0	0	0

Blastocyst results 2010
Age	<40	40-46	All
Mean Age	34,5	41,6	36,3
Number of treatments	72	21	97
Number of pregnant	53	13	68
% pregnant	74	62	70
% with fetal heart rate	54	33	50
Number with multiple fetus	21	29	21

Blastocyst culture is a very demanding process under which several things may improve the results if blastocyst is developed after 5 to 6 days.

The reasons for higher pregnancy rates per transfer is due to several factors:

First of all the selection of the best embryos is improved and more transfers that could be performed at day 2 are cancelled.
Second; the time between transfer and actual hatching and nihidation to the endometrium is shortened.
Thirdly; 5 days after aspiration the natural contractions of the muscular wall of the uterus is reduced compared to the previous days.
And finally the time to intervene for inflammatory processes after aspiration and between transfer and nihidation is reduced.

In conclusion it can be said, that if blastocysts are available for transfer at day 5 or 6 after aspiration, the chances of obtaining a pregnancy is imposing.