Ultrasound dating accuracy 11 weeks

During the examination, the fetus is seen by abdominal ultrasound.The fetus is now large enough for an accurate survey of the fetal anatomy.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.Gestational age, synonymous with menstrual age, is defined in weeks beginning from the first day of the last menstrual period (LMP) prior to conception.

Testing decisions vary greatly depending on family history, medical condition, parental beliefs, etc.

Large pregnant women face even more confusion, since prenatal testing can be slightly harder in this population, and the results can be more confusing.

However, since they may be at a somewhat increased risk for problems like neural tube defects, they also face greater pressure than others to have these prenatal tests, even though the tests are often difficult to interpret.

Big moms should read THIS FAQ first before reading the other FAQ so that they can understand the full implications of ultrasounds in general, before reading how they impact big moms in particular.

"The technology of prenatal diagnosis is usually presented to us as a solution, but it brings with it problems of its own..technology of prenatal diagnosis has changed and continues to change women's experience of pregnancy." All pregnant women in our technology-happy modern society face confusing choices about prenatal testing, its advantages and disadvantages, and its appropriateness for them.