| Registry | NCT00608010 |
|---|---|
| Status | Completed |
| Phase | Not applicable |
| Study type | Interventional; randomized, parallel, masking: single, treatment |
| Enrollment | 186 (Actual) |
| Sponsor | V.K.V. American Hospital, Istanbul (Other) |
| Conditions | Fertilization in Vitro, Preservation of Supernumerary Embryos |
| Interventions | Vitrification, Slow freezing (Procedure) |
| Dates | start 2006-10-01, primary completion 2007-01-01, first posted 2008-02-06, last updated 2008-02-06 |
| Locations | 1 site in Turkey (Türkiye) |
Related Papers Related Patents Related Grants Related Experts
All trials for Fertilization in Vitro All trials for Preservation of Supernumerary Embryos All trials of Vitrification All trials of Slow freezing
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.
| Arm | Type | Interventions | Description |
|---|---|---|---|
| 1 | Experimental | Procedure: Vitrification | Vitrification |
| 2 | Active comparator | Procedure: Slow freezing | Slow freezing |
Sex: Female, ages: 18 Years to any
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)
| Facility | City | Country | Status |
|---|---|---|---|
| American Hospital of Istanbul | Istanbul | Turkey (Türkiye) |