Fee can only offer my tuppence worth about the scratch and DET
My Dr said he didn’t recommend additional interventions like the scratch for a first cycle, he’d only consider it in selected cases after failed implantation of a good quality embryo, he didn’t advocate for disrupting the endometrium without any known good cause - he said more interventions weren’t always better
Re: DET, I am surprised - the HFEA mandates all clinics send out the eSET guidance about reducing the incidence of multiple births
www.oneatatime.org.uk/
The biggest health risk of IVF is multiple births - I know so many couples with twins who’ve all had them spend weeks in the NICU, and very sadly know two couples who were pregnant with two babies, but only brought one home from the hospital.
I would URGE you to read the website above about the morbities associated with multiple births - that’s not to say twins can’t be born healthy, but the risks are significant to mother and babies.
Clinics used to push DET to try and improve their success rates, however they were only judged on ‘live birth’ rates - premature live births, births with health conditions don’t get considered. So the HFEA introduced targets for clinics to achieve at least 75% singleton live births.
It also very much depends on whether you’re talking about day 3 embryos or day 5 blastocysts. The likelihood of twins is much less with a day 3 transfer (although still possible), so although my consultant was absolutely adamant that twins should be avoided if at all possible, we still agreed that we would transfer two embryos at day 3 if we didn’t have enough good quality embryos to go to blast
However, when it comes to day 5 blastocysts, it’s a very different story. The likelihood of pregnancy doesn’t go up by more than a couple of percent (counterintuitively) if you transfer two blasts, but if you do get pregnant, the risk of twins goes up to 1 in 2.
If we had wanted to transfer two blasts, as I am under 37, it was my first transfer, and we had good quality embryos, they would have done the transfer, but I would have had to sign a waiver to say that I was aware of the risks of double blastocyst transfer, and that I was doing so against medical advice