title: Bidirectional conduction through the A-V junction.
mesh_terms: D005117:Cardiac Complexes, Premature / Q000503:physiopathology*; D004562:Electrocardiography; D006325:Heart Atria; D006329:Heart Conduction System / Q000503:physiopathology*; D006352:Heart Ventricles; D006801:Humans