Table 2

Angiographic and Procedural Characteristics

SES (n = 243)PES (n = 240)p Value
Initial SES0.94
 Cypher94 (38.7)92 (38.3)
 ISAR stent149 (61.3)148 (61.7)
Target vessel0.79
 Left anterior descending artery87 (35.8)93 (38.8)
 Left circumflex artery68 (28.0)65 (27.0)
 Right coronary artery88 (36.2)82 (34.2)
Restenosis morphology0.57
 Type I (focal)
  Focal marginal51 (21.0)45 (18.8)
  Focal body91 (37.5)83 (34.6)
  Multifocal16 (6.6)18 (7.5)
 Type II (diffuse)72 (29.6)86 (35.8)
 Type III (proliferative)1 (0.4)0 (0.0)
 Type IV (occlusive)12 (4.9)8 (3.3)
Bifurcation36 (14.8)39 (16.2)0.66
Ostial39 (16.1)41 (17.1)0.76
Lesion length, mm12.7 ± 8.312.5 ± 7.70.72
Vessel size, mm2.78 ± 0.472.75 ± 0.480.50
Stenosis, pre-procedure, %63.4 ± 18.365.6 ± 16.00.15
Minimal lumen diameter, pre-procedure, mm1.02 ± 0.550.95 ± 0.480.10
Balloon diameter, mm3.07 ± 0.483.08 ± 0.500.76
Balloon pressure, maximum, atm15.5 ± 3.515.4 ± 3.00.84
Minimal lumen diameter, post-procedure, in-stent, mm2.54 ± 0.442.53 ± 0.440.81
Minimal lumen diameter, post-procedure, in-segment, mm2.20 ± 0.542.18 ± 0.530.61
Stenosis, post-procedure, in-stent, %11.8 ± 7.311.3 ± 7.10.49
Stenosis, post-procedure, in-segment, %24.0 ± 11.424.1 ± 11.80.97
Procedural success242 (99.6)249 (100.0)0.32

Data shown as n (%) or mean ± SD.

ISAR = individualizable stent to abrogate restenosis; other abbreviations as in Table 1.