[Genetic amniocentesis in high-risk populations. Experience in 3081 cases].

Background: Prenatal diagnosis is an advantage for couples with certain lifestyles, ensures self-determination of an affected child or procreate a healthy. However, Mexico has been performed only in private hospitals and the National Medical Center November 20 ISSSTE and the National Institute of Perinatology.

Objective: To evaluate the frequency of chromosomal abnormalities in 3081 amniocentesis performed in patients at high risk of having an affected child.