Case Control Study
Copyright ©The Author(s) 2022.
World J Clin Pediatr. Jan 9, 2022; 11(1): 71-84
Published online Jan 9, 2022. doi: 10.5409/wjcp.v11.i1.71
Figure 2
Figure 2 Tissue Doppler echocardiography of septal annulus showed the main tissue waves (S, e´ and a´ waves) and how to calculate Myocardial Performance Index. e´ and a´ Early and late filling waves by tissue Doppler; S wave: Myocardial systolic excursion velocity. IVCT: Isovolumic contraction time; IVRT: Isovolumic relaxation time; MPI: Myocardial Performance Index; ET: Ejection time.