title: The quality of S1 as an indicator of left ventricular performance.
mesh_terms: D000208:Acute Disease; D000328:Adult; D005260:Female; D006321:Heart / Q000502:physiology* / Q000503:physiopathology; D006326:Heart Auscultation; D006347:Heart Sounds; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D008875:Middle Aged; D009203:Myocardial Infarction / Q000175:diagnosis / Q000503:physiopathology