NCIt synonyms : Congenital Complete AV Block; Congenital Third Degree Block;
NCIt definition : A disorder characterized by an electrocardiographic finding of a complete atrioventricular
block that manifests during fetal life or soon after birth. It may be isolated or
associated with other congenital heart defects. Isolated congenital complete atrioventricular
block may be associated with maternal connective tissue disorders.;