Fig. 1From: Left atrial phasic function remodeling during its enlargement: a two-dimensional speckle-tracking echocardiography studyLeft atrial phasic strain measurements from four-chamber apical view by 2D STE. Sa, peak strain at atrial contraction phase; Se, peak strain at early diastole phase; Stot, total atrial strain (Stot = Sa + Se)Back to article page