Review Article
Arrhythmias and Sudden Cardiac Death in Beta-Thalassemia Major Patients: Noninvasive Diagnostic Tools and Early Markers
Figure 2
Atrial electromechanical delay: PA interval is measured from the onset of P-wave on surface ECG to the beginning of A-wave on tissue doppler imaging, with sample volume placed at the lateral mitral annulus (a); at septal mitral annulus (b); and right ventricular tricuspid annulus (c).
(a) |
(b) |
(c) |