Figure 1

Figure 1 : 

Measurements of global left atrial longitudinal strain (GLAS) by two-dimensional speckle tracking echocardiography. A. We identified the left atrial peak negative strain, the peak positive strain, the sum of these values and GLAS in sinus rhythm AF patients. B. In atrial fibrillation rhythm patients, we used the onset of the QRS wave as the reference point, and GLAS was identified as the peak positive strain value during ventricular systole.