Dating pregnancy ultrasound accuracy

When expectant management is chosen, most experts recommend beginning twice-weekly antenatal surveillance at 41 weeks with biophysical profile or nonstress testing plus amniotic fluid index (modified biophysical profile); induction may be deferred until 42 weeks if this surveillance is reassuring.

Postterm pregnancy is defined as that lasting beyond 294 days or 42 weeks' gestation.

The accuracy in the estimation of this stage has an effect on the accuracy of the test as well.

Most parents love to have this test because it gives them an assurance that their baby is doing fine and that they need not to worry about a miscarriage or anything unusual.

It is highly recommended that pregnant women have the first ultrasound test at the seventh week of pregnancy. However, the most common ones are because you need to ensure that the health and development of the embryo is good and to give you the assurance and the comfort that everything is fine.

Optimal management of a low-risk, late-term pregnancy should consider maternal preference and balance the benefits and risks of induction vs. Compared with expectant management, induction at 41 weeks' gestation is associated with a small absolute decrease in perinatal mortality and decreases in other fetal and maternal risks without an increased risk of cesarean delivery.

Although there is no clear evidence that antenatal testing beginning at 41 weeks' gestation prevents intrauterine fetal demise, it is often performed because the risks are low.

amniocentesis, which can be done from about 14 weeks gestation, and usually up to about 20 weeks, and chorionic villus sampling, which can be done earlier (between 9.5 and 12.5 weeks gestation) but which may be slightly more risky to the fetus.

Last modified 14-Aug-2019 01:02