What Is the Best Approach for the Assessment of Left Atrial Size? Comparison of Various Unidimensional and Two-dimensional Parameters with Three-dimensional Echocardiographically Determined Left Atrial Volume

The 2DE LA volume correlates better than other parameters with 3DV, but often results in underestimation. Thus, caution should be exercised when using unidimensional and 2D measurements of LA size.