Clinical Characteristics Before β-Blocker Therapy
| Characteristic | Good responders (n = 22) | Poor responders (n = 16) | P |
|---|---|---|---|
| Age (y) | 47.8 ± 10.3 | 54.9 ± 11.8 | NS |
| Sex (M/F) | 16/2 | 11/1 | NS |
| NYHA class | 2.3 ± 0.9 | 2.1 ± 0.6 | NS |
| Type of β-blocker (carvedilol/bisoprolol) | 12/10 | 9/7 | NS |
| Cardiothoracic ratio (%) | 55.0 ± 6.7 | 54.8 ± 5.0 | NS |
| Heart rate (bpm) | 84.0 ± 16.3 | 75.8 ± 10.6 | NS |
| SBP (mm Hg) | 120.3 ± 22.8 | 124.3 ± 19.0 | NS |
| DBP (mm Hg) | 75.2 ± 15.2 | 75.9 ± 12.9 | NS |
| PCWP (mm Hg) | 9.8 ± 6.3 | 8.1 ± 4.6 | NS |
| CI (L/min/m2) | 3.0 ± 0.5 | 3.6 ± 0.7 | NS |
NYHA class = New York Heart Association functional class; NS = not statistically significant; SBP = systolic blood pressure; DBP = diastolic blood pressure; PCWP = pulmonary capillary wedge pressure; CI = cardiac index.