Table 1

Baseline Characteristics of the Studied Population

Age, yrs67.37 ± 9.17
Female45 (22.5)
Ischemic etiology79 (39.5)
NYHA functional class
 II50 (25.0)
 III131 (65.5)
 IV19 (9.5)
Medication
 ACEI/ARB190 (95.0)
 Beta-blockers161 (80.5)
 Diuretics164 (82.0)
 Aldosterone antagonists104 (52.0)
6-min walk test, m275.92 ± 130.32
Creatinine, mg/dl1.28 ± 0.52
QRS width, ms169.29 ± 30.38
LBBB140 (70.4)
Atrial fibrillation, %67 (33.5)
LV end-diastolic volume, ml259.5 ± 84.4
LV end-systolic volume, ml201.0 ± 76.5
LV ejection fraction, %24.0 ± 6.0
LV end-diastolic diameter, mm70.9 ± 8.9
LV end-systolic diameter, mm57.8 ± 10.1
Septum-to-lateral delay, ms67.5 ± 49.2
LV filling time/RR, %42.5 ± 9.8

Values are mean ± SD or n (%).

ACEI = angiotensin-converting enzyme inhibitors; ARB = angiotensin receptor blockers; LBBB = left bundle branch block; LV = left ventricular; NYHA = New York Heart Association.