How accurate is a dating scan at 8 weeks training video tapes online learning sexual harassment

Your sonographer will be experienced at performing these ultrasounds during pregnancy. It involves scanning with the ultrasound probe lying in the vagina.The transvaginal ultrasound probe is thin, about 2cm diameter.We know that the amount of fluid can increase in the presence of certain conditions, producing a thicker NT measurement.Conditions associated with an increased NT measurement include some chromosome abnormalities (for example, trisomy 13, 18 and 21) and some structural problems (for example, heart abnormalities).Transabdominal ultrasound involves scanning through your lower abdomen.A small amount of ultrasound gel is put on the skin of the lower abdomen, with the ultrasound probe then scanning through this gel.Nuchal translucency ultrasound alone can also provide this risk assessment, but it is not as accurate as combined first trimester screening.

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All transvaginal probes have been cleaned and sterilised according to recommended protocols.This means that combined first trimester screening simply tells us if your risk is low or high.For example, it tells us whether your baby has a low risk of having trisomy 13, 18 or 21, or whether your baby has a high risk of having trisomy 13, 18 or 21.This test gives us an indication of whether we should worry about your baby based on these results.This means that combined first trimester screening will not give us a definitive answer.

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