| Parameter  | 
        Admission  | 
        After 6 months | 
         P value | 
       
      
        | LVEDVI (ml/m2) | 
        79.5±2.4 | 
        84.5±2.9 | 
        0.004 | 
       
      
        | LVESVI (ml/m2) | 
        39.3±1.7 | 
        37.2±2.0 | 
        0.144 | 
       
      
        | LVEF (%) | 
        51.4±1.2 | 
        57.8±1.2 | 
        <0.0001 | 
       
      
        | SV index (ml/m2) | 
        40.3±1.4 | 
        47.5±1.6 | 
        <0.0001 | 
       
      
        | MNSER (/sec.) | 
        1.72±0.05 | 
        1.88±0.07 | 
        0.02 | 
       
      
        | Psyst/ESV (mmHg/ml) | 
        2.18±0.13 | 
        2.74±0.20 | 
        <0.0001 | 
       
     
      
      Values are expressed as mean±SEM. P values are based on paired tests (versus
    admission). LVEDVI: Left Ventricular End-Diastolic Volume Index; LVESVI: Left
    Ventricular End-Systolic Volume Index; LVEF: Left Ventricular Ejection Fraction;
    SV: Stroke Volume; MNSER: Mean Normalized Systolic Ejection Rate; Psyst: LV
    systolic pressure; ESV: End-Systolic Volume |