The biopsy chorionic, allows the state of the fetus and conduct the so-called prenatal diagnosis of morphological alterations, or molecular functional. The procedures used for them are of two kinds: one using ultrasound (noninvasive), or the other by fetal samples (invasive).The choice of diagnostic technique to use, and depend on several factors besides the objective analysis. For example, to identify a possible molecular alteration, can not be used ultrasounds, but some of the techniques of sampling fetal. Among them, we can make in the earliest period of gestation is the biopsy coriales villi.
The study consists of obtaining a sample of chorion villus, either cervical, or through the abdominal wall under control ultrasound. With the sample can be obtained chromosome studies, molecular and biochemical. The advantage is that it can be done at very early periods of pregnancy.
After sample extraction of coriales villi, can occur on an exceptional basis, a slight increase in complications, being contraindicated in some women with conditions anatomical and private clinics.
All these considerations imply that the type of technique prenatal diagnosis should be suggested by the gynaecologist according to the characteristics of each woman, with the objective diagnosis to try and achieve pregnancy at the time deemed most appropriate.
