title: P wave analysis in 2464 orthogonal electrocardiograms from normal subjects and patients with atrial overload.
mesh_terms: D016275:Atrial Function; D003201:Computers; D004562:Electrocardiography; D006325:Heart Atria / Q000503:physiopathology; D006331:Heart Diseases / Q000503:physiopathology*; D006801:Humans; D008944:Mitral Valve Insufficiency / Q000503:physiopathology; D008946:Mitral Valve Stenosis / Q000503:physiopathology; D011009:Pneumoconiosis / Q000503:physiopathology; D014672:Vectorcardiography