Dating scans during pregnancy
While a TVS may feel awkward and uncomfortable, it is not painful unless one is tense.Taking deep breaths and relaxing as the probe is inserted is sure to help ease the discomfort.At 6 Weeks If you are taking a first pregnancy scan at 6 weeks, you will notice that there might be a small white circle seen in the gestation sac, which is the yolk sac.This is attached to the embryo and provides it with nutrients.The other one is the early morphology scan or NT scan, which is done between the 11th and the 13th week of the pregnancy.Transvaginal Scan(TVS) A TVS may be needed for a clear image of the baby in the very early stages of pregnancy, as embryo is too small to be visible otherwise.
Blood Tests Beta human chorionic gonadotropin (beta-h CG), which is a hormone made by the placenta, and pregnancy-associated plasma protein A (PAPP-A), is a protein in the blood measured during the tests.
High levels of beta-h CG might indicate birth defects while low levels of PAPP-A might also indicate the same.
There are certain cases in which the doctor might ask for multiple scans in the first trimester.
The probe emits sound waves which bounce off the baby.
These waves are then captured by the probe, which magnifies them and produces an image on the computer screen.
As we mentioned before, the screening during the first trimester usually combines the results of two tests- blood and ultrasound tests.