title: Bigeminy during atrial fibrillation.
mesh_terms: D001281:Atrial Fibrillation / Q000209:etiology / Q000503:physiopathology*; D005117:Cardiac Complexes, Premature / Q000209:etiology / Q000503:physiopathology*; D004562:Electrocardiography; D006327:Heart Block / Q000150:complications / Q000503:physiopathology*; D006329:Heart Conduction System / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged