this baby is quite large at 28 weeks, he's 3.11 lbs.
An ultrasound before 11 weeks is optimal for dating, but before 6 weeks is not good either.
However, if you have a larger than average baby, the ultrasound will apply the husky figures to the “normal” measurements.
This creates error in that the baby will compute out to be further along than he or she really is.
I had a dating ultrasound at the beginning of this pregnancy because my cycles were all out of whack.
They gave me my due date and it seemed to line up with what I thought.
It's a good time to screen the fetus, document placental location, and even check gender.
We no longer "wait & see" when it comes to labor since there's an advantage to having the right equipment & personnel at delivery if an abnormality is present. Read more See 1 more doctor answer "Cephalic presentation" indicates that the fetus is in a longitudinal lie with the head entering the pelvis first.
In addition to diagnostic uses, such as evaluating abnormalities in the abdomen, pelvis, and breast, ultrasounds are commonly used to guide needle and catheter placement in a variety of surgical Generally, transvag more accurate as you can get better views (usually). Read more In general, ultrasound dates in the first half of the pregnancy are more accurate than menstrual dates.
The tech said it should have been done around 8-11 weeks to be more accurate but they have left it at my LMP ever since.
I had many more ultrasounds and the baby has been on the small side the whole time but I was a small baby too. Your baby has no idea when the "adult/doctor/ultrasound-determined-d-day" is and will come when he or she is ready.
Ultrasound has become so helpful that obstetricians now refer to the time before it was used routinely as “the olden days.” We use it to diagnose twins early on; we use it to document appropriate growth as the pregnancy progresses; we use it to determine fetal health; and we use it to guide conversion of breech to vertex (head-first) position and to guide amniocentesis.
Of all of these uses, dating the pregnancy is the most common reason to use ultrasound, particularly when the expectant mother cannot remember the date of her last period (as in breast-feeding or irregular cycles).