Table 4

Quantitative Coronary Angiography in the Main Stented Branch

VariablesDistal LMCA Disease (n = 71)Nondistal LMCA Disease (n = 28)p Value
Before procedure
 RVD (mm)3.10 ± 0.593.29 ± 0.710.52
 MLD (mm)1.18 ± 0.621.38 ± 0.650.17
 Diameter stenosis (%)61 ± 2156 ± 170.35
 Lesion length (mm)9.8 ± 3.88.5 ± 5.30.18
After procedure
 In-stent
  RVD (mm)3.00 ± 0.583.17 ± 0.560.25
  MLD (mm)2.63 ± 0.462.89 ± 0.540.028
  Acute luminal gain (mm)1.46 ± 0.71.5 ± 0.890.80
  Diameter stenosis (%)12 ± 9.58.3 ± 80.12
 In-lesion
  RVD (mm)2.88 ± 0.62.99 ± 0.550.25
  MLD (mm)2.27 ± 0.512.68 ± 0.610.0021
  Acute luminal gain (mm)1.11 ± 0.791.28 ± 0.90.37
  Diameter stenosis (%)12.87 ± 9.910.8 ± 9.30.35
Follow-up
 In-stent
  RVD (mm)2.99 ± 0.663.08 ± 0.580.54
  MLD (mm)2.20 ± 0.712.65 ± 0.620.007
  Diameter stenosis (%)24 ± 2214 ± 120.03
  Late loss (mm)0.42 ± 480.23 ± 0.280.01
  Net luminal gain (mm)§1.03 ± 531.27 ± 0.610.032
  Binary restenosis, no. (%)9 (13)0 (0)0.18
 In-lesion
  RVD (mm)2.93 ± 0.633.00 ± 0.690.69
  MLD (mm)2.01 ± 0.682.51 ± 0.620.00237
  Diameter stenosis (%)24 ± 2216 ± 120.089
  Late loss (mm)0.25 ± 0.520.15 ± 0.340.09
  Net luminal gain (mm)§0.85 ± 0.581.13 ± 0.60.02
  Binary restenosis, no. (%)8 (11)0 (0)0.19

LMCA = left main coronary artery; MLD = minimal lumen diameter; RVD = reference vessel diameter.

  • Difference between MLD after procedure and MLD before procedure.

  • Difference between MLD at follow-up and MLD after procedure.

  • All restenoses were focal (length <10 mm).

  • § Difference between MLD at follow-up and MLD before the procedure.