Iranian Journal of Reproductive Medicine
Research and Clinical Center for Infertility, Shahid Sadoughi University of Medical Sciences of Yazd
Vol. 9, No. 3, 2011, pp. 203-208
Bioline Code: rm11031
Full paper language: English
Document type: Research Article
Document available free of charge
Iranian Journal of Reproductive Medicine, Vol. 9, No. 3, 2011, pp. 203-208
© Copyright 2011 Iranian Journal of Reproductive Medicine.
Successful pregnancy following the transfer of vitrified blastocyst which developed from poor quality embryos on day 3|
Zhang, Xiao-jian; Yang, Ye-zhou; Min, Li-hua; Lv, Qun; Bai, Pin; Li, Xiao-jie & Liao, Mei-xu
Background: The selection of pre-embryos for transferred is based on morphological appearance. But some poor quality cleaved embryos also can be cultured to the blastocyst stage and implanted.
Objective: To assess the clinical pregnancy outcomes of blastocyst transfer which developed from poor quality embryos.
Materials and Methods: A total of 109 cleaved embryos with poor quality were cultured to day 5/day 6 and 27 (24.8%) blastocysts were collected from the 15 cycles/patients undergoing conventional IVF. All the blastocysts were cooling with fast-freezing. Then the blastocysts were warmed for transfer.
Results: All of 25 vitrified blastocysts (92.6%) survived after warming and were transferred to 15 patients. Five of the women became pregnant.
Conclusion: Our results suggest that vitrified human day 5/day 6 blastocyst transfer which develop from poor quality embryo at day 3 can contribute to increasing cumulative pregnancy rates in assisted reproduction.
Poor quality embryos, Vitified Blastocyst- transfer, Pregnancy
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