Hi All,
My wife and I attended our 12 week scan last week and a high Nuchal fold measurement was taken at 3.9mm. Since then have received our risk at 1:75 for DS and decided against the CVS. Main reasons for this are we would definitely not end the pregnancy in case of DS (though I appreciate this is not the worst case scenario). The thing that disturbs me is that I (it took a little encouragement) convinced the second doctor to perform another nuchal scan. I did this because the first sonographer really struggled to get a good measurement and I am convinced most of the measurements she did take were 3.5mm and under. The hospital did agree that they do usually take the highest measurement as the one they use. The second sonographer took lots of readings and they all came in at exactly 3.5mm. Now I know that these things change over time but nobody can tell me what our risk would have been if we had taken this reading at the initial dating scan. 1:100? 1:500? Higher?
The one thing that concerns me above all else however is that the second doctor said that the statistics measured in the general population *(not taking into account age, weight, blod tests etc.) where the NS measurement is between 3.5 and 4.4mm (21.1% likelihood of chromosomal defect; 2.7% fetal death; 70% normal and healthy) in his words "supersedes the provided risk factor from the combined screening".
This has left me totally confused. For me, this is about balancing the risk of the invasive procedure against the risk of a defect and currently I do not know if our risk is 3:10, 1:75, or significantly lower than that even.
I feel like the NHS will not offer an honest opinion as they have probably been burned in the past from people taking them at their word and then playing the blame game when they are wrong.....
Any advice from someone who knows what they are talking about or has been through similar experiences is truly appreciated.
Thanks in advance.