title: Unmasking of dual atrioventricular nodal pathways with spontaneous premature ventricular contractions.
mesh_terms: D001145:Arrhythmias, Cardiac / Q000175:diagnosis*; D001283:Atrioventricular Node / Q000503:physiopathology*; D006329:Heart Conduction System / Q000503:physiopathology*; D006352:Heart Ventricles / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged