Diseases characterized by pathological irregularities in the HEART CONDUCTION SYSTEM. They may be associated with other heart diseases and syndromes (e.g., BRUGADA SYNDROME; NEUROMUSCULAR DISEASE, HEART BLOCKS), isolated or may result from injuries. You can have a conduction disorder without having an arrhythmia, but some arrhythmias arise from conduction disorders. OMIM: 601144.

Synonyms: Defect, Cardiac Conduction, Cardiac Conduction System Diseases, Cardiac Conduction Defect, Cardiac Conduction Defects, Cardiac Conduction System Disease, Conduction Defect, Cardiac