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the baby and its heart beat can be detected relatively easily with trans-abdominal and trans-vaginal examination.This is presuming that the pregnancy is actually at this stage of development.Again, inaccurate assessment of gestational age will lead to errors in assessing the severity of fetal sensitization by the delta OD 450.Fetal growth assessment, either clinically or by ultrasound evaluation, also relies on accurate assessment of gestational age."The computer within the ultrasound machine is capable of taking all the size measurements of the head, abdomen and femur, to give an estimate of size based on weeks of pregnancy," says Dr. "For example, if a woman who is 28 weeks pregnant goes in for an ultrasound, most of her baby's measurements should be equal to 28 weeks, as determined by the machine."As long as your baby's measurements are progressing along a normal growth curve, you have no reason to worry."A cause for concern arises when measurements are either much larger or much smaller than anticipated," Dr. "A smaller baby in the second and third trimesters, particularly a baby whose abdomen is measuring smaller, may not be getting everything he or she needs from its placenta.
"Ultrasound is paramount in measuring the size and growth of babies because it helps practitioners become aware of other health conditions that may be hiding in a pregnant woman, allows us to initiate more testing, if necessary, and prepare for delivery," Dr. These measurements will help ensure that you and your baby are healthy throughout the pregnancy and beyond. All content on this Web site, including medical opinion and any other health-related information, is for informational purposes only and should not be considered to be a specific diagnosis or treatment plan for any individual situation.Fetal growth retardation or macrosomia may be missed or incorrectly diagnosed owing to errors in gestational age assignment.Interpretation of antenatal biophysical testing (non-stress tests and biophysical profiles) may be subject to variation with gestational age as well.Sometimes a trans-vaginal examination shows that your pregnancy is less advanced than expected.The earlier the ultrasound is done, the more accurate it is at estimating the baby's due date.