Baby dating scan accuracy

Dating scan accuracy?!

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Unless you have an early pregnancy scan most of you will be given your estimated due date at the week scan. With my last pregnancy I knew the dates of my LMP and went for a dating scan which showed a 4 week difference in dates. Out of curiosity what was the birthweight of your DS?? For example, I remember driving from Brisbane to gold coast and back within an hour and got back home and slept straight for the rest of the day this was before I found out I was pregnant and I usually cannot sleep during the day and feeling constantly tired and EXTREMELY dizzy and this would have been when I was approximately 3 weeks pregnant 1 week gestational??? The sonographer actually said that my GP was naughty, and that everyone should have a dating scan regardless of knowing their lmp dates etc. Also, I had recorded quite strong movements at approx 14 weeks I have had two previous pregnancies , but going by these new dates, i would have been 11 weeks??? In NZ it is quite unusual to have a dating scan, while in OZ it seems to be the norm.

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Ultrasound Scans Can Tell When Baby Is Due

General health Pregnancy and parenting Aged care Caring for someone. Dating scans are used to confirm how many weeks pregnant you are and your expected due date. Why would I have a dating scan?

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How is a dating scan performed? What preparation do I need to do for a dating scan? Check with your ultrasound clinic for any preparation you need to do prior to the scan. The scan will take 5—10 minutes to perform. What will I learn from a dating scan?

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At a dating scan you will also be able to: Australian Government Department of Health Guidelines for the use of ultrasound in the management of obstetric conditions. Opens in a new window.

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BabyCenter Australia Dating scans. Babies are ready when they're ready - try not to worry easier said than done. But Nigel also says that the estimated and that is all it is date is normally accurate plus or minus about a week. The healthcare professionals will stick to this date as far as possible because it is then used as the baseline for growth throughout pregnancy. Your baby's growth can slow down and then have spurts. I've not even had my 20 week scan yet.

I have scans every few weeks so it will probably keep on changing.

How accurate are 'due dates'? - BBC News

My baby will come when it's ready anyway, maybe weeks before or maybe weeks after my due date. These can be carried out from week 5 or 6 of pregnancy, which is a notoriously tricky time to be accurate on dates. Measurements at such an early stage aren't accurate which is why they wait for 12 weeks to date you. Expert Jan Steward, who is director of Ultrasound Direct and Babybond, agrees that early scans carry a much greater risk of inaccuracy.

We always recommend mums get a definitive dating scan closer to 12 weeks as this will be much more accurate. Just half a millimetre at such an early stage can change your date by a week. Your week scan will be far more accurate.

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The sonographer then said that I was only about 4. Then at the week scan I got an EDD of 15 march, so that early scan was completely out. Well, you'd think so, wouldn't you. At around 12 weeks you can get more accurate measurements. By talking to the health care professionals you should get a clearer picture as to what is happening. Mine have being cause i knew my last AF and how long it went for. If you are concerned ask you doctor and see if you can have another scan done at a later date.

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Nodrog New Zealand Total posts: It seems pretty unlikely that you would ovulate 3 weeks late! My midwife said any scans after 12 weeks aren't accurate as by then the genetic differences will have started to show eg I'm 5 ft 9 and DH is 6 ft 3 so our baby is likely to be bigger than someone who is 5 ft 2 with a partner of 5 ft 9 IYKWIM. With my current pregnancy I knew my LMP date but didn't get a positive test until over a week after AF was due, it turned out that I ovulated a week late.

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A dating scan is the best way to predict your due the end of your pregnancy if you think your baby is. i didnt no what answer to give him so i'll ask on here how accurate can they be on the age of the baby at a dating scan done before 10 weeks??.

But as I said earlier it is pretty unlikely that you would have ovulated 3 weeks late without noticing as that is a week after your AF should have shown up. Two bouncy boys New Zealand Total posts: No as acurate but neither is going off the date of your LMP With it so far out they will probably go off the new date.

I know the exact date of my last LMP but I know I wasnt preg just opver 2 weeks ago but if im preg now im on day 68 of my cycle witch would make me like 8 - 10 weeks pregnant when I would really be no more then 5 weeks. With my last pregnancy I knew the dates of my LMP and went for a dating scan which showed a 4 week difference in dates.

It turned out that AF had just not arrived the previous month so my LMP was actually 6 weeks prior to her being conceived making a 4 week variance if that makes sense? I have been told typically scans can be up to 10 days out either way especially later in pregnancy so i'd so maybe you are due somewhere in the middle?

Maybe around the 18 week mark? Also did it show on your 12 week scan? Posted Sunday 06 March