Hi ladies
I've been meaning to say hello on this thread for ages (am a very sporadic poster on the original thread), but am finally posting now in case I can help answer some of HelenLouisey's questions. I'm currently 24 weeks pregnant, after a termination of our first pregnancy for T21 and heart problems, followed by an early miscarriage, both of which happened last year. All looks to be ok so far this time round, thankfully.
I chose not to have a CVS this time, as my risk level at the NT scan was pretty low (about 1 in 2500 for T21, about 1 in 12,000 for the other trisomies). My understanding though is that previous chromosomal abnormalities are taken into account when calculating the risk level. My original base level (before NT and bloods) for the first pregnancy last year was about 1 in 400 for T21, based on me being 33 at the time. Six months later, this had gone as high as 1 in 112, due to the previous diagnosis.
Depending on which hospital you are at, they can do the bloods and NT scan at the same time. I'm at Kings in London, which has been fantastic. They took blood samples before the scan, we had the NT scan come back as ok, and about an hour later (they sent us out for a coffee) they had the blood results back and could give us the combined risk number. All the Kings people are trained by Prof. N, which gave me huge reassurance.
Another thing that Kings were amazing at this time - and I'm sure that it was specific to this hospital - is that I had an early scan at 9.5 weeks as part of a study they are running looking into the reliability of early scans as indicators of healthy pregnancies etc. As part of this scan, they actually measured the nuchal fold and told us off the record that it looked fine. While they couldn't say anything officially (the study is still running), it was a huge thing to have even an unofficial indicator that things might be ok. I'm just mentioning this in the unlikely event that you, or anyone else, is at Kings and could request something similar. I was asked to participate in the study after having some even earlier scans for this pregnancy (long story, but there was a risk that my previous miscarriage had been ectopic, so I had to go in as soon as I found out I was pregnant again).
In terms of other scans, I haven't been offered anything additional as the nuchal scan this time was low risk. But they did spend a very, very, long time on the NT scan, much longer than for most people, and included an internal as well as an external scan for added clarity. We paid for a private "reassurance" scan at 16 weeks, as I was still finding it very difficult to tell anyone our news after what had happened last time. Our "regular" 20 week was again particularly thorough, so I'm as reassured as I can be that everything is ok. A combination of the good 20 week scan, plus feeling regular kicks from the baby, have really helped me to start to relax about things in recent weeks, although there's still a long way to go.
I'm not very good at regular posting but do lurk a lot, so if I can ever help anyone with any questions then I'd be delighted - I have gained so much support from these threads over the last nine or so months.
Kate xx