| | ELCA group | Non-ELCA group | p value | (n = 18) | (n = 24) |
| Pre-PCI procedure | | | | MLCSA, mm2 | 1.37 ± 0.93 | 1.02 ± 0.31 | 0.13 | MSCSA, mm2 | 6.46 ± 2.14 | 5.80 ± 1.92 | 0.32 | Neointimal CSA, mm2 | 5.09 ± 2.16 | 4.75 ± 1.85 | 0.60 | Percentage of neointimal area, % | 77.9 ± 13.2 | 80.6 ± 6.6 | 0.44 | After ELCA procedure | | | | MLCSA, mm2 | 1.63 ± 0.91 | N/A | | MSCSA, mm2 | 6.67 ± 2.19 | N/A | | Neointimal CSA, mm2 | 5.03 ± 2.22 | N/A | | Percentage of neointimal area, % | 74.1 ± 13.5 | N/A | | After DCB procedure | | | | MLCSA, mm2 | 3.85 ± 1.11 | 3.42 ± 1.14 | 0.21 | MSCSA, mm2 | 6.99 ± 2.14 | 7.17 ± 2.26 | 0.78 | Neointimal CSA, mm2 | 3.13 ± 1.44 | 3.75 ± 1.60 | 0.19 | Percentage of neointimal area, % | 43.7 ± 13.2 | 51.2 ± 10.7 | 0.04 | Follow-up | | | | MLCSA, mm2 | 3.07 ± 1.37 | 3.33 ± 1.18 | 0.51 | MSCSA, mm2 | 6.66 ± 1.92 | 7.44 ± 1.98 | 0.20 | Neointimal CSA, mm2 | 3.59 ± 1.91 | 4.12 ± 1.84 | 0.36 | Percentage of neointimal area, % | 52.5 ± 19.4 | 54.1 ± 15.3 | 0.75 | Changes ELCA and pre PCI | | | | ΔMLCSA, mm2 | 0.67 ± 0.42 | N/A | | ΔMSCSA, mm2 | 0.21 ± 0.99 | N/A | | ΔNeointimal CSA, mm2 | -0.06 ± 1.13 | N/A | | Changes after PCI and ELCA | | | | ΔMLCSA, mm2 | 2.22 ± 1.19 | N/A | | ΔMSCSA, mm2 | 0.32 ± 1.07 | N/A | | ΔNeointimal CSA, mm2 | -1.90 ± 1.48 | N/A | | Changes after and pre PCI | | | | ΔMLCSA, mm2 | 2.49 ± 1.31 | 2.33 ± 1.13 | 0.69 | ΔMSCSA, mm2 | 0.53 ± 1.38 | 0.97 ± 1.02 | 0.26 | ΔNeointimal CSA, mm2 | -1.96 ± 1.56 | -1.36 ± 0.92 | 0.16 | Changes at follow-up and after PCI | | | | ΔMLCSA, mm2 | -0.89 ± 1.36 | -0.09 ± 1.25 | 0.05 | ΔMSCSA, mm2 | -0.49 ± 1.48 | 0.28 ± 0.78 | 0.03 | ΔNeointimal CSA, mm2 | 0.39 ± 1.94 | 0.37 ± 0.98 | 0.96 | Number of dissections | | | | After PCI | 5.8 ± 3.6 | 9.0 ± 6.9 | 0.07 | Follow-up | 0.1 ± 0.3 | 0.2 ± 0.4 | 0.24 | Changes at follow-up and after PCI | -5.7 ± 3.5 | -8.8 ± 6.8 | 0.09 |
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Continuous variables expressed as mean ± standard deviation; categorical variables, as number (percentage). ELCA, excimer laser coronary atherectomy; PCI, percutaneous coronary intervention; MLCSA, minimum lumen cross-sectional area; MSCSA, minimum stent cross-sectional area; CSA, cross-sectional area; DCB, drug-coated balloon.
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