Fertilization in Vitro, Preservation of Supernumerary Embryos
Conditions
Keywords
Preservation of supernumerary embryos in an IVF program
Brief summary
Embryo preservation through freezing plays a significant role in human assisted reproduction. It provides an opportunity for patients to have more than one attempt following an ovarian stimulation cycle, thereby decreasing the exposure of patients to exogenous gonadotrophins and improving cumulative pregnancy rates. The purpose of this study is to compare effectiveness of two different freezing methods.
Interventions
PROCEDUREVitrification
Embryos were vitrified according to a previously described technique
PROCEDURESlow freezing
Embryos were frozen with slow freezing technique
Sponsors
V.K.V. American Hospital, Istanbul
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)
Eligibility
Sex/Gender
FEMALE
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* ICSI with own gametes * Couples who did not wish to cryopreserve their excess embryos for possible transfer in a future cyle * Donating excess embryos for research purposes
Exclusion criteria
* Embryos derived from surgically retrieved spermatozoa * Blastocysts * Embryos of low quality (Grade 3 or 4 according to Hardarson)
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Blastocyst development rate | 3 days after thawing |
Countries
Turkey (Türkiye)
Outcome results
None listed