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Table 3 Comparison of LA two-dimensional and three-dimensional measurements in patients with CSFP

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

 2D measurements (n = 60)3D measurements (n = 60)P-value
LA Volmax (mL)54.53 ± 13.5954.78 ± 10.780.78
LA Volp (mL)38.97 ± 11.5239.31 ± 8.640.38
LA Volmin (mL)26.11 ± 9.6126.90 ± 7.050.10
LA total ejection fraction (%)53.34 ± 9.4451.32 ± 3.860.09
LA active ejection fraction (%)32.90 ± 9.4731.78 ± 6.240.48
LA passive ejection fraction (%)27.14 ± 9.7128.37 ± 4.570.42
  1. Values shown are means±SD or percentages
  2. Abbreviation: 2D two-dimensional, 3D three-dimensional, LA left atrium, 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