Gestation sac size in in-vitro fertilization pregnancies: Interesting article

[arin01]

Gestation sac size in in-vitro fertilization pregnancies

ABSTRACT

Summary. The gestation sac size in pregnancies resulting from in-vitro fertilization (IVF) and embryo transfer have been compared with those in spontaneous pregnancies. Small-for-dates gestational sac sizes were found in 36% of the IVF pregnancies. This proportion held for both singleton and multiple pregnancies. With increasing gestation beyond 8 weeks the gestation sac volume increasingly approached normal. In contrast to spontaneous conceptions, IVF pregnancies had a low rate of pregnancy loss once fetal heart movements were demonstrated, when the gestation sac size was small-for-dates. Small sac size in an IVF pregnancy may lead to the misdiagnosis of a failed pregnancy.

reference:Journal of Obstetrics & Gynaecology Volume 92 Issue 9, Pages 953 - 956