Baseline and 6-Month Follow-up Characteristics: Responders Versus Nonresponders
| Characteristic | Responders (n = 24) | Nonresponders (n = 16) | P |
|---|---|---|---|
| NYHA class | |||
| Baseline | 3.0 ± 0.2 | 3.2 ± 0.5 | NS |
| Follow-up | 1.7 ± 0.5* | 3.2 ± 0.5 | <0.01 |
| QoL score | |||
| Baseline | 34.4 ± 17.4 | 44.9 ± 20.4 | NS |
| Follow-up | 21.6 ± 19.2* | 40.0 ± 16.3 | <0.05 |
| 6-MWT (m) | |||
| Baseline | 353.9 ± 80.9 | 272.2 ± 99.4 | <0.05 |
| Follow-up | 439.8 ± 102.9* | 326.8 ± 108.6 | <0.05 |
| LVEDV (mL) | |||
| Baseline | 274.4 ± 79.2 | 219.3 ± 82.8 | <0.05 |
| Follow-up | 243.7 ± 77.0* | 180.7 ± 56.5 | <0.05 |
| LVESV (mL) | |||
| Baseline | 210.5 ± 75.4 | 167.1 ± 78.4 | NS |
| Follow-up | 166.8 ± 76.8* | 129.3 ± 50.1 | NS |
| LVEF (%) | |||
| Baseline | 23.9 ± 7.5 | 25.4 ± 8.1 | NS |
| Follow-up | 33.8 ± 12.7* | 30.0 ± 8.1 | NS |
| LV dyssynchrony (ms) | |||
| Baseline | 62.3 ± 37.4 | 40.0 ± 26.1 | <0.05 |
| Follow-up | 40.4 ± 32.5 | 33.2 ± 31.6 | NS |
↵* P < 0.05 follow-up vs. baseline.
Data are represented as mean ± SD or absolute number, with percentages in parentheses.
NS = not significant; other abbreviations as in Table 2.