Table 2.
The LV/RV Structure and Function in Non‐fQRS, Inferior fQRS, and Anterior/Lateral fQRS Groups
| fQRS groups | Non‐fQRS (N=657) | Inferior fQRS (N=220) | Anterior/lateral fQRS (N=83) | P value (ANOVA) |
|---|---|---|---|---|
| LV structure | ||||
| Septal wall thickness, mm | 9.9±2.0 | 10.2±2.0 | 10.4±1.9 | 0.015 |
| Posterior wall thickness, mm | 10.0±2.0 | 10.3±2.0 | 10.3±1.9 | 0.039 |
| LV internal dimension, mm | 46.3±6.1 | 47.0±6.2 | 47.7±6.7 | 0.080 |
| LV EDV index, mL/m2 | 44.2±13.8 | 45.2±15.5 | 48.9±17.0* | 0.028 |
| LV ESV index, mL/m2 | 15.0±8.7 | 15.1±9.9 | 17.3±11.8 | 0.120 |
| LVEF, % | 67.9±13.6 | 69.2±14.2 | 67.6±15.4 | 0.450 |
| LV mass, g | 162.8±58.6 | 174.9±60.7* | 180.2±75.1* | 0.004 |
| LV mass index, g/m2 | 94.2±30.8 | 99.4±32.7 | 105.3±39.5* | 0.004 |
| Presence of LVH, % | 216 (32.9%) | 84 (38.2%) | 39 (47.0%) | 0.027 |
| LV M/V ratio | 2.2±0.8 | 2.3±1.0 | 2.2±0.7* | 0.684 |
| LV function | ||||
| Mitral E/A ratio | 1.2±1.5 | 1.1±0.8 | 1.2±0.8 | 0.370 |
| DT, ms | 210.8±77.3 | 211.1±74.8 | 206.7±79.9 | 0.892 |
| IVRT, ms | 85.9±33.4 | 87.5±30.5 | 91.5±34.3 | 0.312 |
| TDI‐e′, cm/s | 5.7±1.8 | 5.4±1.8 | 4.8±1.9* | 0.001 |
| TDI‐s′, cm/s | 5.7±1.4 | 5.6±1.3 | 5.0±1.3* , † | 0.001 |
| Mitral E/TDI‐e′ | 16.1±7.0 | 16.5±7.1 | 20.4±9.8* , † | <0.001 |
| TR velocity, cm/s | 3.0±0.4 | 3.0±0.5 | 3.2±0.6* , † | 0.010 |
| RV structure and function | ||||
| RV EDA, cm2 | 30.5±13.1 | 31.9±13.5 | 37.3±16.3* , † | <0.001 |
| RV ESA, cm2 | 16.1±8.7 | 16.9±9.0 | 20.9±11.9* , † | <0.001 |
| RV FAC, % | 48.4±7.9 | 47.9±8.4 | 45.5±8.4* | 0.015 |
| Atrial structure | ||||
| LA volume index, mL/m2 | 28.3±13.3 | 28.0±11.9 | 33.0±15.0* , † | 0.010 |
| RA volume index, mL/m2 | 22.9±14.8 | 22.4±20.3 | 28.3±18.2* , † | 0.022 |
Data are expressed as mean±SD or percentage. All expressions are listed in Table 1. DT indicates deceleration time; EDA, end‐diastolic area; EDV, end‐diastolic volume; ESA, end‐systolic area; ESV, end‐systolic volume; FAC, fractional area change; fQRS, fragmented QRS; IVRT, interventricular relaxation time; LA, left atrial; LV, left ventricular mass to volume ratio; LV, left ventricular; LVEF, left ventricular ejection fraction; LVH, left ventricular hypertrophy; RA, right atrial; RV, right ventricular; TDI, tissue Doppler imaging; and TR, tricuspid regurgitation.
*
P<0.05 vs non‐fQRS.
†
P<0.05 vs inferior fQRS.