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Table 3 Quantitative coronary angiography (QCA) and intravascular ultrasonographic (IVUS) analyses of lesion characteristics

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  
Baseline Total lesion length, mm 31.3 ± 13.6 29.5 ± 13.1 0.566
  Calcium length ratio 0.81 ± 0.10 0.76 ± 0.12 0.093
  Superficial calcium arc 288.1° ± 36.3° 279.7° ± 41.8° 0.363
  Reference vessel diameter, mm 2.8 ± 0.3 2.7 ± 0.4 0.253
  Min. lumen diameter, mm 1.3 ± 0.2 1.3 ± 0.2 0.869
  Reference vessel CSA, mm2 6.4 ± 1.5 6.0 ± 1.9 0.315
  Min. CSA, mm2 1.3 ± 0.4 1.3 ± 0.4 0.896
  Lumen stenosis rate, % 79.1 ± 4.8 77.8 ± 4.2 0.217
After stent Total stent length per lesion, mm 38.5 ± 13.1 35.8 ± 12.2 0.365
  Min. stent diameter, mm 2.7 ± 0.4 2.5 ± 0.4 0.097
  Min. stent CSA, mm2 5.9 ± 1.7 * 5.0 ± 1.4 0.021
  Residual lumen stenosis rate, % 10.5 ± 10.4 14.7 ± 10.8 0.103
  Acute CSA gain, mm2 4.5 ± 1.5 * 3.8 ± 1.5 0.035
  1. Min minimum, CSA cross sectional area
  2. *P < 0.05 compared with RA group