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Clinical characteristics of the study population (n = 30)
| Age (yrs) | 60.5 ± 18.2 |
| Men | 14 (46.7%) |
| Ischemic cardiomyopathy | 10 (33.3%) |
| Previous infarction | 6 (20%) (4 anterior, 2 inferior) |
| Idiopathic dilated cardiomyopathy | 20 (66.7%) |
| Previous infarction | 6 (20%) |
| QRS duration (ms) | 145 ± 14 |
| Echo LVEF (%) | 29.1 ± 3.6 |
| NYHA class | 3.43 ± .50 |
Data are presented as mean ± standard deviation, or as number (%).
LVEF, Left ventricular ejection fraction; NYHA, New York Heart Association.
