Table 1.

Baseline Characteristics

	CRT-HF Cohort (n=20)	Multimodality Cohort (n=27)
Age, mean (SD), y	58 ± 10	50 ± 15
Gender, No. (%)
Male	13 (65)	16 (59)
Female	7 (35)	11 (41)
Cardiomyopathy, No. (%)
Ischemic	8 (40)	8 (30)
Nonischemic	12 (60)	19 (70)
LVEF, mean (SD)	0.23 (0.057)	0.20 (0.066)
QRSd, mean (SD), ms	151 (26)	138 (34)
NYHA Class, No. (%)
I	0 (0)	3 (11)
II	0 (0)	12 (44)
III	20 (100)	12 (44)
IV	0 (0)	0 (0)
Medication use, No. (%)
Beta Blocker	19 (90)	26 (96)
Amiodarone	3 (15)	1 (4)

CRT-HF=Cardiac Resynchronization Therapy-Heart Failure

LVEF=left ventricular ejection fraction

QRSd = QRS duration

NYHA=New York Heart Association