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Table 2 Characteristics of coronary lesions and PCI procedures of patients in the RA + CB and RA (control) groups*

From: Intensive plaque modification with rotational atherectomy and cutting balloon before drug-eluting stent implantation for patients with severely calcified coronary lesions: a pilot clinical study

   RA + CB RA P
Subjects, n   35 36  
Lesion location, n (%) Left main coronary artery 8 (22.9) * 2 (5.6) 0.036
  Left anterior descending artery 20 (57.1) 23 (63.9) 0.561
  Left circumflex artery 5 (14.3) 4 (11.1) 0.688
  Right coronary 7 (20.0) 9 (25.0) 0.614
  Ostial lesion 3 (8.6) 4 (11.1) 0.720
  Chronic total occlusion 0 (0) 0 (0)
  Bifurcated lesion (Medina 1, 1, 1) 11 (31.4) 14 (38.9) 0.511
  Bifurcated lesion (Medina 1, 1, 0) 2 (5.7) 2 (5.6) 0.977
Indications for RA Balloon catheter not passed, n (%) 20 (57.1) 22 (61.1) 0.275
  Balloon catheter under expansion, n (%) 15 (42.9) 14 (38.9) 0.327
  Final bur size, mm 1.58 ± 0.15 1.51 ± 0.18 0.100
  Burr/artery ratio 0.56 ± 0.03 0.56 ± 0.04 0.934
Pre-dilatation after RA Pre-dilatation, n (%) 35 (100) 36 (100) 1.000
  Max balloon diameter, mm 2.65 ± 0.31 2.53 ± 0.37 0.163
  Max balloon inflation pressure, atm 13.8 ± 1.3 14.1 ± 1.0 0.190
  Balloon inflation time, s 18.3 ± 3.6 19.7 ± 4.0 0.134
Stent implantation Stent delivery failure, n (%) 0 (0) 0 (0) __
  Stent diameter, mm 2.79 ± 0.29 2.73 ± 0.37 0.418
  Stent release pressure, atm 14.5 ± 1.5 14.8 ± 1.5 0.377
Post-dilatation after stent Non-compliant balloon, n (%) 28 (82.9) 31 (86.1) 0.188
  Max balloon inflation pressure, atm 18.4 ± 1.7 18.8 ± 2.4 0.421
  Balloon inflation time, s 20.4 ± 2.9 19.5 ± 2.4 0.210
  1. *P < 0.05 compared with RA group