Clinical outcome of day 5 and day 6 blastocyst vitrification | ||||
| The Egyptian Journal of Fertility of Sterility | ||||
| Article 3, Volume 16, Issue 1 - Serial Number 11106352, January 2012, Page 9-12 PDF (1.59 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/egyfs.2012.257279 | ||||
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| Author | ||||
| Eman A. Elgindy | ||||
| Department of Obstetrics and Gynecology, Zagazig School of Medicine, Zagazig University, Egypt | ||||
| Abstract | ||||
| Objective: to compare survival, clinical pregnancy and ongoing pregnancy rates of blastocysts vitrified on day 5 and those which had one day delay and vitrified on day 6. Materials & Methods: The study included 210 vitrified warmed cycles, 135 patients underwent vitrifivation at day 5 (group I) and 75 patients at day 6 (group II). Blastocyst survival and clinical pregnancy/embryo transfer were primary outcomes. Ongoing pregnancy/embryo transfer was the secondary outcome. Result(s) blastocyst post-warming survival rates were comparable between both groups (92.9% (263/283) of day 5 versus 94.9% (166/175) of day 6 blastocysts). There was no statistically significant difference between the 2 groups regarding the mean number of transferred blastocysts. Clinical pregnancy rates were 40.6% (52/128) & 43.7% (31/71) in women who undergone vitrification at day 5and day 6 respectively with no significant differences. Similarly, ongoing pregnancy rate was comparable between the 2 groups, 37.5% (48/128) versus 39.4% (28/71) in groups I & II. Conclusion(s): blastocysts vitrified on day 5 have the same survival, clinical and ongoing pregnancy rates of blastocysts which had one day delay and vitrified on day 6. | ||||
| Keywords | ||||
| Key words: Blastocyst transfer; clinical pregnancy; vitrification | ||||
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