Figure 1.

Two-dimensional STE analysis of LA in the apical four-chamber view in patient with AF. (a) Dashed line reflects mean LA longitudinal strain and allows the measurement of mean peak positive LS. (b) Dashed curve depicts mean LA longitudinal strain rate and allows the assessment of LSSR and LESR

AF - atrial fibrillation; AVC - aortic valve closure; LA - left atrium; LESR - average LA longitudinal early diastolic strain rate; LS - average peak positive longitudinal systolic atrial strain; LSSR - average LA longitudinal systolic strain rate; MVC - mitral valve closure; STE - speckle-tracking echocardiography