Table 3: Optical coherence tomography analysis.

ELCA groupNon-ELCA groupp value
(n = 18)(n = 24)

Pre-PCI procedure
 MLCSA, mm21.37 ± 0.931.02 ± 0.310.13
 MSCSA, mm26.46 ± 2.145.80 ± 1.920.32
 Neointimal CSA, mm25.09 ± 2.164.75 ± 1.850.60
 Percentage of neointimal area, %77.9 ± 13.280.6 ± 6.60.44
After ELCA procedure
 MLCSA, mm21.63 ± 0.91N/A
 MSCSA, mm26.67 ± 2.19N/A
 Neointimal CSA, mm25.03 ± 2.22N/A
 Percentage of neointimal area, %74.1 ± 13.5N/A
After DCB procedure
 MLCSA, mm23.85 ± 1.113.42 ± 1.140.21
 MSCSA, mm26.99 ± 2.147.17 ± 2.260.78
 Neointimal CSA, mm23.13 ± 1.443.75 ± 1.600.19
 Percentage of neointimal area, %43.7 ± 13.251.2 ± 10.70.04
Follow-up
 MLCSA, mm23.07 ± 1.373.33 ± 1.180.51
 MSCSA, mm26.66 ± 1.927.44 ± 1.980.20
 Neointimal CSA, mm23.59 ± 1.914.12 ± 1.840.36
 Percentage of neointimal area, %52.5 ± 19.454.1 ± 15.30.75
Changes ELCA and pre PCI
 ΔMLCSA, mm20.67 ± 0.42N/A
 ΔMSCSA, mm20.21 ± 0.99N/A
 ΔNeointimal CSA, mm2-0.06 ± 1.13N/A
Changes after PCI and ELCA
 ΔMLCSA, mm22.22 ± 1.19N/A
 ΔMSCSA, mm20.32 ± 1.07N/A
 ΔNeointimal CSA, mm2-1.90 ± 1.48N/A
Changes after and pre PCI
 ΔMLCSA, mm22.49 ± 1.312.33 ± 1.130.69
 ΔMSCSA, mm20.53 ± 1.380.97 ± 1.020.26
 ΔNeointimal CSA, mm2-1.96 ± 1.56-1.36 ± 0.920.16
Changes at follow-up and after PCI
 ΔMLCSA, mm2-0.89 ± 1.36-0.09 ± 1.250.05
 ΔMSCSA, mm2-0.49 ± 1.480.28 ± 0.780.03
 ΔNeointimal CSA, mm20.39 ± 1.940.37 ± 0.980.96
Number of dissections
 After PCI5.8 ± 3.69.0 ± 6.90.07
 Follow-up0.1 ± 0.30.2 ± 0.40.24
 Changes at follow-up and after PCI-5.7 ± 3.5-8.8 ± 6.80.09

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.