Correlation of P wave in the electrocardiogram with left atrial pressure and size.
D000293:Adolescent; D000328:Adult; D006332:Cardiomegaly / Q000503:physiopathology*; D002648:Child; D002675:Child, Preschool; D004562:Electrocardiography; D005260:Female; D006321:Heart / Q000503:physiopathology*; D006325:Heart Atria / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D008944:Mitral Valve Insufficiency / Q000150:complications; D008946:Mitral Valve Stenosis / Q000150:complications