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Is the EDD given to you on your scan date from your LMP or by the date of conception?
Wiki User
∙ 18y ago
EDD is ESTIMATED. If done by scan is 38 weeks from conception. An EDD is based on the LMP (last menstrual period) and not the date of conception. The ultrasound measurements are comparing the baby to the expected size of other babies at the same gestational age. The earlier the ultrasound is done in the pregnancy, the more accurate it will be. Hope this helps! Dr. B.
Wiki User
∙ 18y ago
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What is a fetus's gestation age and due date when the LMP is unknown and can you count back the weeks at a dating scan to see when possible conception occured?
When you have a dating scan the scanner compares the size of the fetus with the size of fetuses of known gestation. The gestational age assumes that the mother has a regular 28 day cycle and got pregnant 14 days before a period. the gestational age is calculated from this notional LMP. This is accurate in about 85% of cases. If you don't know your LMP and have been given an EDD/gestational age you need to take off 2 weeks to find an estimated date of conception. this website will help you. http://www.genetree.com/about/conception-calculator.asp
Is an ultrasound EDD accurate if your period does not last normally seven days?
the EDD is the estimated date of delivery, with both of my children the edd was not correct. my first was born a week after the edd which was the date of conception plus 40 weeks. my second was born 10 days prior to the edd but i also had 4 different edd. Estimated Date of Delivery is just that, Estimated. A baby can be born from 3 weeks before up to 2 weeks after with no problems. With my first, his scan EDD was 10 days later than my period EDD and he was born on the scan EDD. Second time around (twins) the scan and period EDD were the same but I was induced 4 weeks before with pre-eclampsia. The only EDD that is accurate from an ultrasound is one done in the first trimester. The earlier the ultrasound is performed, the better. We measure what is known as the crown-rump length (the measurement from the top of the head to the baby's backside), and this measurement is the most accurate in predicting an EDD. First trimester ultrasounds are typically accurate within a week of how far along a baby actually is. Second trimester ultrasounds are up to two weeks off; and third trimester ones are up to three weeks off. What we are measuring, though, is how far along the baby really is--not when the baby will be born. As someone else mentioned, a due date is only an estimate--and only 5% of women actually deliver on their due date. ! Dr. B.
Does 'gaedd' have anything to do with 'lmp' when a scan is done because yours says this on the top of the picture?
I am not sure what the GA is(possibly Gestational Age), EDD is 'Estimated Date of Delivery' (due date) and LMP is 'Last Menstrual Period' from which the EDD is calculated. 40 weeks from LMP is EDD.
Is it a rule to go by the last period to set a pregnancy due date?
Generally, the expected date of delivery (EDD) is calculated as 40 weeks counting from the woman's last menstrual period (or from the date of conception if known).
When given a dating ultrasound do you need to subtract two weeks for an actual date?
When you have a dating ultrasound you are given an EDD (estimated date of delivery) If you count back 40 weeks from this date it should be about when your last period was. If you do not have a regular cycle they may not correlate exactly. 38weeks back from your EDD is approximately when you conceived.
Which is the date of conception on an ultrasound?
No. Gestational age is measured from the woman's last period. Even if she doesn't know when this was, the gestational age is time from conception plus 2 weeks. For example, a 'gaedd 19 weeks' will give you a due date 21 weeks in the future. You are 17(+ 1 day) weeks from conception. 19(+ 1 day) weeks from your notional last period and 21 (- 1 day) weeks until your EDD.
Your girlfriend is pregnant and on the ultrasound said GA edd 19 weeks and 0 days but that would place conception to almost 3 weeks before you had sex what does this mean?
They count the weeks of pregnancy back to the last date of the first day of your menstrual period, not to date of conception. For example, I am considered to be at 15 weeks. The first day of my last period was 11/25/08 and the date of conception was anywhere between 12/9 and 12/16
What exactly does edd stand for?
The meaning of the acronym EDD is an acronym for many of things. Such as, estimated delivery date, estimated due date, or expected date of delivery of a baby.
Is it true that you can add nine months and one week to your conception date to see what your due date should be?
The answer is you add one week from the first day of your last period then subtract three months. This is your due date. For example: First day of last period was Feb 13th 2007. Add one week = Feb 20th 2007. Then subtract three months = Nov. 20th 2007 will be your due date. Yes No, you add 9 months and a week to your last period date for your edd. From conception is 9 months minus a week. (38 weeks) http://www.genetree.com/about/conception-calculator.asp
You conceived on October 28 when is your due date?
July 21st is your EDD but you can have the baby 3 weeks either side of this quite normally.
If your EDD from 3 Ultrasounds before 12 weeks suggest 6th December 06 what could be the earliest date you got pregnant?
The earliest you could have got pregnant would be about March 10. See the Related Link for "Pregnancy date calculator" to the bottom for the answer. This gives you a way of working out the dates, but the sex may have been a few days before the conception date.
Term for a pregnant woman's due date?
on the medical forms it would be down as EDD. expected due date
