Bloqueo aurículo-ventricular congénito completo y anticuerpos maternos anti-Ro positivos

We report the case of an asymptomatic mother at week 26 of pregnancy who presented to the emergency department with abdominal pain. On examination, an anomalous fetal heart rate was detected and congenital heart block was confirmed. The only abnormal result of maternal blood test was the presence of positive anti-nuclear antibodies and anti-Ro autoantibodies.