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Table 2 Comparison of LA function measurements

From: Incremental value of three-dimensional echocardiography for evaluating left atrial function in patients with coronary slow flow phenomenon: a case control study

 Controls (n = 45)CSFP (n = 60)P-value
LA 2D volumes measurements
 LA 2D Volmax (mL)47.31 ± 12.3154.53 ± 13.590.006
 LA 2D Volp (mL)32.96 ± 9.6938.97 ± 11.520.006
 LA 2D Volmin (mL)20.56 ± 6.2526.11 ± 9.610.001
 LA 2D total ejection fraction (%)56.83 ± 6.0852.52 ± 9.990.001
 LA 2D active ejection fraction (%)38.74 ± 6.7933.60 ± 9.770.003
 LA 2D passive ejection fraction (%)27.64 ± 6.7526.40 ± 9.570.46
LA 3D volumes measurements
 LA 3D Volmax (mL)49.29 ± 8.2354.78 ± 10.780.007
 LA 3D Volp (mL)34.52 ± 6.1139.31 ± 8.640.003
 LA 3D Volmin (mL)21.75 ± 4.8926.90 ± 7.05< 0.001
 LA 3D total ejection fraction (%)56.40 ± 3.0351.38 ± 3.85< 0.001
 LA 3D active ejection fraction (%)37.13 ± 6.4231.78 ± 6.24< 0.001
 LA 3D passive ejection fraction (%)29.94 ± 5.0928.37 ± 4.570.12
  1. Values shown are means±SD
  2. Abbreviation: LA left atrium, 2D two-dimensional, 3D three-dimensional, LA Volmax maximal LA volume in ventricular systole just before mitral valve opening, LA Volmin minimal LA volume after mitral valve closure, LA Volp LA volume at the onset of the P wave on electrocardiography