| 组别 | 例数 | VCD(mm/m) | BNP(pg/ml) |
| 观察组 | 60 | 64.75 ± 5.02 | 424.30 ± 125.32 |
| 对照组 | 60 | 50.23 ± 4.65 | 342.58 ± 108.17 |
| T | - | 9.490 | 13.593 |
| P | - | <0.05 | <0.05 |