Log in Sign up. Pregnancy All Pregnancy Antenatal health. Community groups Birth Clubs Labour and birth tips Twins or more Pregnant with second, third or more! I’m pregnant! See all Pregnancy groups. Home Pregnancy Antenatal health Antenatal scans. In this article When will I have my first ultrasound scan? Can an ultrasound scan tell exactly how many weeks pregnant I am? What else will the first trimester scans reveal? What happens during the ultrasound scan?
Early pregnancy scan (booking or dating scan)
A nuchal translucency screening, or NT screening, is a specialized routine ultrasound performed between week 11 and week 13 of pregnancy. Fetuses with increased fluid at the base of their necks — a spot known as the nuchal fold — may have a chromosomal problem such as Down syndrome. Nuchal translucency is a prenatal screening , which means the results can’t tell you for sure whether your child has a chromosomal disorder, only the statistical likelihood.
It’s often combined with a blood test to offer more insight into the relative odds of your baby being born with a genetic disorder. An NT screen is often part of routine prenatal testing during the first trimester and is recommended for all women. While it’s widely available, some areas especially rural ones may not have the machine and technicians with the experience to perform the procedure.
1 – Nuchal translucency scan ( weeks) What is a nuchal translucency Down’s syndrome occurs by chance during conception. Women who are unsure of their dates are recommended to have a dating scan before the screening test.
A dating scan is an ultrasound examination which is performed in order to establish the gestational age of the pregnancy. Most dating scans are done with a trans-abdominal transducer and a fullish bladder. If the pregnancy is very early the gestation sac and fetus will not be big enough to see, so the transvaginal approach will give better pictures.
Dating scans are usually recommended if there is doubt about the validity of the last menstrual period. By 6 to 7 weeks gestation the fetus is clearly seen on trans-vaginal ultrasound and the heart beat can be seen at this early stage 90 to beats per minute under 6 to 7 weeks, then to beats per minute as the baby matures. Ultrasounds performed during the first 12 weeks of pregnancy are generally within 3 – 5 days of accuracy. The most accurate time is between 8 and 11 weeks gestation. This is because the fetus is growing so quickly that there is a big difference in size from week to week.
However, the accuracy of the ultrasound examination is always dependent on the skill of the sonographer and the quality of the equipment.
Patients & Visitors
Unless there are concerns about the pregnancy it is better to wait to have this scan after 7 weeks as the images are clearer for you to see and better for us to measure. If you come before 7 weeks the baby will be less than 1cm in size and so the scan sometimes has to be performed transvaginally placing the probe inside the vagina to enable us to see the baby well enough to measure and to see the heartbeat.
We ask that you come with a full bladder for this scan as it usually allows us to get the best possible picture of the baby.
To help us keep our patients, staff and visitors safe, stop the spread of Coronavirus Covid , visiting restrictions are in place — please see click here for the latest information. During your pregnancy you will be offered a number of screening tests. Your midwife will advise you which tests are offered and why. These tests can help you find out more about your own health and the health of your baby before birth. Some of these tests are best taken before 10 weeks of pregnancy.
Therefore, as soon as you know you are pregnant please contact your GP, Midwife or complete our online referral form:. It is always your choice whether to have a test or not. The information which these tests can provide may help your midwife to provide the best care possible during your pregnancy and the birth. The test results may also help you to make choices about your pregnancy. We routinely offer all women blood tests in the early stages of pregnancy to check for any potential problems.
We recommend these tests are taken before 9 weeks of pregnancy.
This scan is carried out from 11 weeks to 13 weeks and six days. The scan is usually performed transabdominally but in a few cases it may be necessary to do the examination transvaginally. If you want to visit your own FMF page please click here. Aims of the nuchal scan To date the pregnancy accurately. This is particularly relevant for women who cannot recall the date of their last period, have an irregular menstrual cycle, or who have conceived whilst breastfeeding or soon after stopping the pill.
We measure the size of the fetus and from this we calculate the expected date of delivery.
That’s because screening needs to be carried out between 11 and 14 weeks, and the results rely on an accurate due date. Nuchal translucency scan. You’ll be.
Visit NHS Choices for a detailed pregnancy and baby guide with lots of useful tips for parents to be. Act now to protect your baby from whooping cough from birth. You can request the vaccination from your midwife after your 20 week scan at your antenatal appointment or you can just turn up to Floor 1, Maternity between Monday — Friday 9am -5pm. It’s used to see how far along in your pregnancy you are and check your baby’s development.
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This first routine scan is carried out for the following reasons:. It is not diagnostic. We also like to arrange this for around 12 weeks, but it can be performed between 10 and 14 weeks.
during your dating scan. screening programmes booklet ‘Screening tests for you and your baby’. What will happen if I decide to have the test? When you arrive at the Fetal Medicine Unit for your first trimester scan, also called the nuchal scan.
A dating scan is an ultrasound scan to determine how many weeks pregnant you are and your due date. Read on for more information about what a dating scan offers. A dating scan might be recommended before 12 weeks to confirm your due date if you are unsure of your last menstrual period or your date of conception. The scan is optional and not everyone will have it. You can discuss whether you want or need a dating scan with your doctor or midwife.
If you choose to have a dating scan, it will most probably be your first scan. You will need to get a referral from your doctor or midwife for a dating scan. Most women can instead have their first scan at 11 to 13 weeks — this is usually called the week scan. A dating scan is carried out by ultrasound.
Scans in the first trimester
Log in Sign up. Community groups. Home Pregnancy Health Antenatal scans. In this article What is nuchal translucency? Why might I have a nuchal scan? How is the nuchal scan performed?
As part of your first scan at around 12 weeks, you may choose to have the Nuchal Transluceny (NT) scan which is part of the combined screening test for Down’s.
The browser you are using is too old for our website. Please visit www. Scans during pregnancy can make some mums-to-be a little nervy, which is perfectly natural. Most of the time scans are there to simply help confirm your little one is developing healthily – with the added bonus that you get to see your baby moving around. But sometimes they can reveal a few more serious issues. In the UK you will be offered at least two, the first at 8 to 14 weeks and the second at 18 to 21 weeks.