«Once this has been achieved,» he explains, «we will be seeing a new era of pre-implantation genetic diagnosis aimed at, identifying disease - free blastocysts, identifying developmentally competent blastocysts among a cohort developing in vitro and achieving single
blastocyst transfer in order to avoid multiple births.»
Also critical:
blastocyst transfer [allowing embryos to develop robustness in a lab for five days instead of the usual three before transfer back into the uterus].
He was one of the first physicians to perform and report on
blastocyst transfer in the United States.
Blastocyst transfer is a procedure allowing the transfer of fewer embryos into the uterus while maintaining high pregnancy rates and reducing the risk of high order multiple pregnancy (triplets and greater).
The majority of our patients under the age of 40 have one or two
blastocysts transferred or three blastocysts for those over the age of 40.
We are striving very hard to limit the number of twins, and eliminate the occurrence of higher order multiples (see below) using techniques such as embryo selection and
blastocyst transfers, and the introduction of «elective single embryo transfer».
Not exact matches
Our Virginia fertility center only performs embryo
transfers five days after egg retrieval at the
blastocyst stage, which results in a significantly higher rate than a Day 3 embryo
transfer.
This means
transferring only a single embryo (usually a
blastocyst).
Blastocyst culture and
transfer has brought about a dramatic reduction in the incidence of high - order multiple pregnancy, and our ultimate goal is to reduce this incidence to zero.
Multiple pregnancy (twins, triplets, etc.) is associated with greatly increased risks of prematurity and very low birthweight, so the
transfer of a single
blastocyst in all patients was a vital improvement.
Techniques of
blastocyst culture and
transfer practiced at VCRM have substantially reduced the chances of multiple conception, without sacrificing a patients» overall chance of pregnancy.
Of the 5,103 embryos frozen at the
blastocyst stage, 816 (16 percent of the total) were frozen on D7 and 53 of these were later
transferred to attempt pregnancy.
Also, it is recommended to use single embryo
transfer in all situations if a top - quality
blastocyst is available.
Most embryo
transfers at Pacific Fertility Center are done with
blastocyst stage embryos.
How can you have a meeting with people who come to it with a deep abiding faith that a fertilized egg is a person, and a
blastocyst created by nuclear
transfer is a person, and the destruction of that
blastocyst to harvest stem cells is murder?
Out of 1,368 granulocyte
transfers at least 34 percent reached the
blastocyst stage, and two actually resulted in living pups (who did not survive for long), according to the paper presenting the result published online in Nature Genetics on October 1.
They found that some sperm DNA methylation regions were also associated with poor
blastocyst stage of embryo quality as defined by the IVF clinic's standards related to embryo quality before
transfer into the uterus of the female partner to establish a pregnancy, Pilsner says.
The patent gives California - based Geron Corp. exclusive rights to animal embryos prepared by
transferring the nucleus of a quiescent diploid donor cell into a suitable recipient cell up to and including the
blastocyst stage.
The authors demonstrated that an early pronuclear
transfer (ePNT) yields better
blastocyst survival in comparison with late pronuclear
transfer.
Moreover, ability of this cohort of oocytes to support the development of parthenogenic or nuclear
transfer embryos to
blastocyst stage has not been assessed.
Approximately ten to fifteen iPS cells were injected into the cavity of each
blastocyst, all of which were kept in KSOM with amino acids until embryo
transfer.
Injected or aggregated
blastocysts were then
transferred into pseudopregnant recipient mothers.
Embryos that reached the
blastocyst stage were
transferred into the oviduct of Day 0.5 CD1 pseudopregnant females [16].
IVC in the presence of fetal calf serum (FCS) followed by embryo
transfer reduced by half the capacity of the resulting
blastocysts to implant in the uterus when compared to culture without FCS.