Little is available on perinatal outcome of cryopreserved day-7 blastocyst transfer. In the present report, perinatal outcomes for transfers of cryopreserved blastocysts by a vitrification method were examined with respect to the day of blastocyst expansion among on day 5, 6 or 7 before cryopreservation. 263 cycles of vitrified-warmed blastocyst stage embryo transfer performed between April 2005 and April 2009 were reviewed retrospectively. There were 144 cycles with day-5 blastocyst, 100 cycles with day-6 blastocyst, and 19 cycles with day-7 blastocyst. There were no differences among the vitrified day-5, day-6 and day-7 blastocyst transfer groups in the mean number of embryos transferred, pregnancy rate, implantation rate and miscarriage rate. At this time, 62 deliveries have occurred with no reported abnormalities.
Just as the blastocysts are anonymous in the initial stages of the development of a human embryo bitcoin too started rather anonymously in 2009 by an individual called Satoshi Nakamoto who to this day in elusive. Created initially as a medium of exchange in the digital world, this cryptocurrency has grown in stature and size till 2017 when it literally held the stock market at its mercy at $19000 before falling rather rapidly to below $9000.
Since then the interest in this cryptocurrency has grown exponentially and everyone is keen on possessing some of it. Cryptocurrency exchanges spurted everywhere around the globe and people started investing in this crypto, some even went to the extent of selling their property and converting it into bitcoin. Where money is involved, scammers can’t be far behind and thus this virtual currency too had its shares of hacks and scams with people losing millions of dollars. The scams didn’t stop there, they percolated into even automated trading software which many investors purchased as they could trade in cryptocurrencies from the comforts of their home without the need for any middleman.
The increased incidence of scams left investors unsure about the authenticity of a software. Thankfully, Crypto Code is one of the few authentic systems that have managed to remain viable just like all the blastocysts that survived to live and as a result, There were 37 infants from 34 deliveries with day-5 blastocyst, 25 infants from 22 deliveries with day-6 blastocyst, and 7 infants from 6 deliveries with day-7 blastocyst. There were no differences among the three groups in the mean gestational age, preterm delivery rate and mean birth weight. These results indicated that blastocysts have similar inherent viability regardless of whether they develop by on day 5, 6 or 7.