title: [Echocardiographic evaluation of the serial changes in cardiac functions before and after surgery of valvular heart diseases and the left ventricular reserve by the dynamic exercise].
mesh_terms: D000328:Adult; D002302:Cardiac Output; D004452:Echocardiography; D005260:Female; D006321:Heart / Q000503:physiopathology*; D006349:Heart Valve Diseases / Q000503:physiopathology* / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D005082:Physical Exertion; D011184:Postoperative Period; D013318:Stroke Volume