title: Changes in QRS compledx after aortic valve replacement.
mesh_terms: D001021:Aortic Valve / Q000601:surgery*; D004562:Electrocardiography; D006327:Heart Block / Q000175:diagnosis / Q000209:etiology*; D006801:Humans; D009203:Myocardial Infarction / Q000209:etiology; D011183:Postoperative Complications