title: [Prenatal diagnosis of fetal cardiac defect].
abstract: BACKGROUND
  The prevalence of congenital cardiac defects is 8 per 1000 neonates, and it's different if high or low risk populations are studied. The fetal ultrasonographic increase prenatal detection but varies from 7 to 90%.
  
  
  OBJECTIVE
  To know the prevalence of fetal cardiopathy and detection in high risk pregnancies.
  
  
  METHODS
  A observational study was made in pregnancies women with 16 old week of gestation.
  
  
  RESULTS
  We received a total of 3500 high-risk pregnancies and were detected 112 cases with fetal cardiopathy (3.2%). The 30% of them had a risk factor of cardiopathy. The most frequent fetal cardiac defect detected were arrhythmia in 34 fetus, septal defects in 30, valvular defects in 17, hypoplasic or absence of cardiac cavities 16, tronco-conus defects 8, and other 7 included ectopia cordis 3, cardiac tumor 2, abnormal drainage of pulmonary veins 2. The diagnosis increased every year since started study. The prenatal diagnoses suspected in fetal echocardiography were confirmed in 80% of the cases in neonatal period.
  
  
  CONCLUSIONS
  The detection rate of fetal cardiac defect was 3.2% in high-risk pregnancies, four times higher than general population prevalence of congenital heart disease. We found a 30% overall perinatal mortality in fetal cardiac defect. The most frequent fetal cardiac defects found in this screening were arrhythmias and septal ventricular defects in almost 50% of patients.
authors.affiliation: Departamento de medicina fetal, Hospital Regional de Especialidades número 23, IMSS, México.
authors.forename: Mauro Alberto
authors.initials: MA
authors.lastname: Ochoa Torres
authors.forename: Ricardo Jorge
authors.initials: RJ
authors.lastname: Hernández Herrera
authors.forename: Jaime
authors.initials: J
authors.lastname: Hernández Gerardo
authors.forename: Sergio Arturo
authors.initials: SA
authors.lastname: Luna García
authors.forename: Yadira Mayela
authors.initials: YM
authors.lastname: Padilla Martínez
mesh_terms: D003430:Cross-Sectional Studies; D005260:Female; D006330:Heart Defects, Congenital / Q000000981:diagnostic imaging* / Q000453:epidemiology*; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D015995:Prevalence; D016216:Ultrasonography, Prenatal