title: A Wenckebach variant.
mesh_terms: D004562:Electrocardiography; D006321:Heart / Q000503:physiopathology*; D006327:Heart Block / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000503:physiopathology