Table 2.
Comparison of echocardiographic parameters between the two groups
| LBBB | Control | P | |
|---|---|---|---|
| LVEF, % | 58.8±7 | 65.7±7 | 0.042 |
| E, cm/s | 54.1±16.6 | 52.4±16.3 | 0.666 |
| A, cm/s | 82.4±17.9 | 70.6±13.7 | 0.003 |
| E/A ratio* | 0.56/0.64/0.74 | 0.6070.65/1.10 | 0.186 |
| E', cm/s | 5.6±1.3 | 7±1.9 | 0.001 |
| A', cm/s | 8.7±2 | 9.2±2.1 | 0.403 |
| E/E' ratio | 9.95±3.4 | 7.7±2.2 | 0.002 |
| Basal rotation,°, | -2.9±2.3 | -4.1±2.7 | 0.050 |
| Apical rotation,°, | 2.5±1.9 | 4.4±2.9 | 0.002 |
| Twist,°, | 5.4±3 | 8.6±3.3 | 0.001 |
| Longitudinal, LVdys | 38.9±28.3 | 18.5±17.1 | 0.009 |
| Preejection interval of RV, ms | 163.9±22.6 | 156.9±27.2 | 0.247 |
| Preejection interval of LV, ms | 226.9±25.7 | 180.6±25.7 | 0.001 |
| IVMD, ms | 63±22.5 | 23.7±16.7 | 0.001 |
| SPMWD, ms | 71.7±26 | 22.1±12.8 | 0.001 |
A - late-diastolic mitral inflow velocity; A’ - late-diastolic mitral annular velocity; E - early mitral inflow velocity; E’ - early-diastolic mitral annular velocity; IVMD - interventricular mechanical delay; LVEF - left ventricular ejection fraction; LVdys - left ventricular dyssynchrony index; SPWMD - septal to posterior wall motion delay.
*
Data are presented as median and interquartile ranges