Measurements Tetralogy of Fallot Controls P-value
TV E (cm/s) 77.8 ± 20.5 72.2 ± 8.1 0.293
TV A (cm/s) 52.4 ± 8.7 44.6 ± 5 0.002*
TV E/A 1.5 ± 0.4 1.6 ± 0.2 0.367
TV annulus  S’ (cm/s) 8.1 ± 2 12.5 ± 2.2 <0.001*
TV annuls E’(cm/s) 12.9 ± 2.9 16.4 ± 3.1 0.001*
TV annulus A’(cm/s) 6.5 ± 1.5 9.3 ± 2.4 <0.001*
TV  E’/A’ 2.1 ± 0.5 1.8 ± 0.4 0.085
RV MPI 0.44 ± 0.11 0.33 ± 0.05 <0.001*
TV E/E’ 6.3 ± 2.4 4.9 ± 1.6 0.046*
TV: Tricuspid Valve; E: Early Diastolic Filling; A: Late Diastolic Filling, S’: Peak Systolic Velocity; E’: Peak Velocity In Early Diastole; A’: Peak Velocity In Late Diastole; MPI: Myocardial Performance Index Data are expressed as mean (± SD). *P<0.05 is of significance
Table 6: Echocardiographic analysis of right ventricular functions in patients with tetralogy of Fallot versus healthy controls.