Vitrification Versus Slow Freezing of Human Day 3 Embryos
Recruitment status was Active, not recruiting
In assisted reproduction technology (ART), cryopreservation of embryos maximizes the potential of IVF cycles. Currently different cryopreservation methods are used, the conventional slow freezing method and vitrification. There is, therefore an immediate need to assess which cryopreservation technique is preferential in human IVF. In this prospective randomised study conventional slow freezing and vitrification, using the Hemi-straw carrier system, of human day 3 embryos were compared.
|Study Design:||Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single Blind (Subject)
Primary Purpose: Treatment
|Official Title:||Vitrification Versus Slow Freezing of Human Day 3 Embryos|
- Pregnancy rate [ Time Frame: 9 months ] [ Designated as safety issue: Yes ]
- survival rate after thawing of embryos [ Time Frame: 24 hours ] [ Designated as safety issue: Yes ]
|Study Start Date:||October 2005|
|Estimated Study Completion Date:||December 2008|
Vitrification using Hemi-straw carrier system.
No Intervention: 2
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