| Autor: |
André Hazout, Bernard Nicollet, Robert A. Kaufmann, Yves Menezo, Edouard J. Servy, M. Dumont |
| Rok vydání: |
1995 |
| Předmět: |
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| Zdroj: |
Scopus-Elsevier |
| ISSN: |
0015-0282 |
| Popis: |
Objective To present our experience using cocultured cryopreserved and transferred blastocysts. Design Retrospective study of patients undergoing transfer of cryopreserved blastocysts. Setting Three different IVF centers. Patients Four hundred sixty-seven thawed cycles from January 1991 to June 1994. Main Outcome Measure Pregnancy rate per cycle after transfer of pre-embryos developed from thawed blastocysts. Results One thousand two hundred thirty-nine blastocysts were thawed. Of these, 1,033 (83%) survived thawing and were transferred. Five hundred sixty-three thawed cycles resulted in 516 (92%) receiving intrauterine transfer. One hundred twelve clinical pregnancies were established, resulting in a 21.7% pregnancy per transfer with a 19% ongoing rate. The implantation rate of 13.4% results from 138 implanted pre-embryos. There was a higher PR in the programmed cycle (79/302; 26.2%) compared with the natural cycle (6/47; 13%). Conclusions Freezing at the blastocyst stage is a proven and reliable method in IVF technology. Although there may be fewer pre-embryos, their ability to implant appears to approach the potential of a fresh transfer. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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