Author/Authors :
Zhang ، Xiao-jian نويسنده Department of Assisted Reproductive Medical Center, Sichuan Academy of Medical Sciences and Sichuan Provincial People’s Hospital, Sichuan, China , , Yang ، Ye-zhou نويسنده Department of Assisted Reproductive Medical Center, Sichuan Academy of Medical Sciences and Sichuan Provincial People’s Hospital, Sichuan, China , , Min ، Li-hua نويسنده Department of Assisted Reproductive Medical Center, Sichuan Academy of Medical Sciences and Sichuan Provincial People’s Hospital, Sichuan, China , , Lv ، Qun نويسنده Department of Assisted Reproductive Medical Center, Sichuan Academy of Medical Sciences and Sichuan Provincial People’s Hospital, Sichuan, China , , Bai ، Pin نويسنده Department of Assisted Reproductive Medical Center, Sichuan Academy of Medical Sciences and Sichuan Provincial People’s Hospital, Sichuan, China , , Li، Xiaojie نويسنده , , Liao ، Mei-xu نويسنده Department of Assisted Reproductive Medical Center, Sichuan Academy of Medical Sciences and Sichuan Provincial People’s Hospital, Sichuan, China ,
Abstract :
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
