[Correlation between prenatal ultrasound and postnatal diagnosis of birth defects]

To assess the accuracy of prenatal ultrasound diagnosis and to analyze the protocol applied for congenital defects (CD) in our environment.

Descriptive study of prenatally diagnosed CD in our area between 2004-2013. Includes: total births, fetal medicine referrals (number of consultations, ultrasound, invasive techniques) anatomical and chromosomal abnormalities, confirmed diagnoses, necropsies performed, false diagnoses, absence of prenatal diagnoses, and number and reasons for abortions (VIEs).

Mean annual births were 3,646 ± 1,299, with a mean prenatal ultrasound of 2,144 ± 307 and 512 ± 74 invasive techniques per year. The annual average of prenatal chromosomopathies diagnosed were 26 ± 8 and 140 ± 14 anatomical abnormalities, which represents a 36.44% from all of the prenatal ultrasound performed. These include: neurological, cardiac and nephron-urological anatomic anomalies. Pre and post-natal correlation was observed in 95.6% of the DCs detected. Most common causes of abortion were chromosomal abnormalities, heart and neurological diseases.

Due to the variety of CD that cause VIEs, a highly specialized multidisciplinary approach is recommended to ensure optimal information for parents.