Table 2. Echocardiographic characteristics of heart failure patients with non-ischemic dilated cardiomyopathy.
| With LBBB (n=38) | With no LBBB (n=42) | p value | |
|---|---|---|---|
| LV end-diastolic volume (mL/m2) | 115.7±16.8 | 109.0±13.7 | 0.315 |
| LV end-systolic volume (mL/m2) | 84.6±14.6 | 82.4±13.6 | 0.794 |
| LV ejection fraction (%) | 26.1±4.2 | 24.6±4.2 | 0.395 |
| LA volume (mL/m2) | 44.5±15.4 | 44.2±17.8 | 0.448 |
| LA emptying fraction (%) | 41.6±10.1 | 40.8±11.2 | 0.311 |
| Global LV GLS (%) | −6.5±2.3 | −6.2±2.0 | 0.355 |
| Global PALS (%) | 13.0±11.3 | 13.6±10.9 | 0.422 |
| E velocity (cm/s) | 66.0±26.3 | 70.1±26.2 | 0.662 |
| A velocity (cm/s) | 72.8±20.1 | 72.6±23.1 | 0.982 |
| DT (ms) | 200.6±77.4 | 186.8±67.4 | 0.216 |
| e′ velocity (cm/s) | 3.7±1.2 | 3.5±1.0 | 0.453 |
| a′ velocity (cm/s) | 6.5±1.8 | 6.1±1.9 | 0.562 |
| E/e′ | 18.5±8.1 | 20.2±6.5 | 0.327 |
| MR grade (>2) | 8 (21.0) | 11 (26.2) | 0.392 |
| PA systolic pressure (mmHg) | 42±15 | 44±14 | 0.764 |
Data are expressed as the mean±standard deviation or number (%).
DT = deceleration time of mitral early diastolic velocity; E = mitral early diastolic velocity; E/e′ = the ratio of early diastolic mitral inflow velocity to early diastolic mitral annular velocity; GLS = global longitudinal strain; LA = left atrium; LBBB = left bundle branch block; LV = left ventricular; MR = mitral regurgitation; PA = pulmonary artery; PALS = peak atrial longitudinal strain.