2.
两组患者PCI前后IVUS检测结果比较
Comparison of IVUS results between the two groups before and after PCI (Mean±SD)
| Items | SB group (n=52) | CB group (n=59) | t | P |
| IVUS test before PCI | ||||
| Intimal calcification radian (°) | 319.1±14.3 | 319.9±16.1 | -0.288 | 0.774 |
| Calcified lesion total length (mm) | 14.16±4.06 | 15.09±3.42 | -1.304 | 0.195 |
| Reference vessel diameter (mm) | 2.79±0.37 | 2.70±0.47 | 1.136 | 0.259 |
| Minimum lumen diameter (mm) | 1.00±0.17 | 0.99±0.15 | 0.579 | 0.564 |
| Minimum lumen cross-sectional area (mm2) | 1.01±0.12 | 0.97±0.16 | 1.499 | 0.137 |
| Lumen cross-sectional area stenosis degree (%) | 83.7±3.7 | 84.9±3.9 | -1.699 | 0.092 |
| PCI stent application | ||||
| Number of stents placed/Target blood vessels (number) | 1.85±0.36 | 1.76±0.43 | 1.108 | 0.270 |
| Stent length/Target blood vessels (mm/single) | 37.2±4.3 | 35.9±3.8 | 1.605 | 0.111 |
| IVUS test after PCI | ||||
| Minimum stent lumen diameter (mm) | 2.52±0.41 | 2.66±0.30 | -2.140 | 0.035 |
| Minimum lumen cross-sectional area in the stent (mm) | 5.35±0.60 | 5.63±0.72 | -2.207 | 0.029 |
| Residual stenosis of lumen cross-sectional area (%) | 13.4±2.1 | 11.7±2.3 | 3.996 | 0.000 |
| Immediate lumen diameter acquisition (mm) | 1.40±0.30 | 1.60±0.26 | -3.873 | 0.000 |
| Immediate lumen cross-sectional area acquisition (mm2) | 3.78±0.62 | 4.80±0.53 | -9.286 | 0.000 |
| Lesions residual stenosis < 10 % [n (%)] | 3（5.8） | 15（25.4） | 7.859 | 0.005 |