title: Intermittent left anterior hemiblock with Wenckebach phenomenon.
mesh_terms: D002037:Bundle-Branch Block / Q000209:etiology / Q000503:physiopathology*; D003327:Coronary Disease / Q000150:complications / Q000503:physiopathology; D004562:Electrocardiography; D005260:Female; D006329:Heart Conduction System / Q000503:physiopathology*; D006339:Heart Rate; D006801:Humans; D008875:Middle Aged