<unk>  may be found before or after a baby is born. Certain diseases that may occur during pregnancy can cause heart block in a baby. Some<unk>  heart defects also can cause<unk> .
Congenital heart block
Conduction system disease
Cyanotic heart defect
Heart valve dysplasia
Cardiac arrhythmia
Heart block
Congenital cyanotic heart disease
Respiratory sinus arrhythmia