Table 1

Clinical Characteristics and Procedural Variables (N = 445)

Absorb (N = 291)Xience (N = 154)p Value
Demographics
 Males217 (74.6)123 (79.9)0.241
 Age (y)61 ± 1061 ± 100.786
 Current smoking77 (26.5)33 (21.4)0.251
 Lipid disorder requiring medication201 (69.1)116 (75.3)0.258
 Hypertension requiring medication188 (64.6)104 (67.5)0.802
 Diabetes mellitus64 (22.0)38 (24.7)0.554
 Stable angina187 (64.3)100 (64.9)0.917
 Body mass index (kg/m2)27.8 ± 4.128.1 ± 3.70.542
 Obesity (BMI ≥30 kg/m2)67 (23.1)44 (28.6)0.208
Lesions (N = 480)313 lesions167 lesions
 Pre-procedural angiography
 Lesion location0.184
 Left anterior descending artery146 (46.7)81 (48.5)
 Left circumflex artery88 (28.1)35 (21.0)
 Right coronary artery79 (25.2)51 (30.5)
Lesion classification0.456
 A4 (1.3)1 (0.6)
 B1181 (58.0)85 (51.5)
 B2125 (40.1)78 (47.3)
 C2 (0.6)1 (0.6)
Quantitative coronary angiography
 Interpolated percent diameter stenosis (%)58.3 ± 11.159.1 ± 11.40.448
 Minimal lumen diameter (mm)1.08 ± 0.321.07 ± 0.310.627
 Reference vessel diameter (mm)2.60 ± 0.372.64 ± 0.400.327
 Maximal diameter at proximal reference segment (mm)2.84 ± 0.452.87 ± 0.460.476
 Maximal diameter at distal reference segment (mm)2.69 ± 0.452.74 ± 0.430.258
Procedural variables
Pre-dilation
 Pre-dilation before IVUS115 (36.7)59 (35.3)0.842
 Pre-dilation performed313 (100.0)165 (98.8)0.121
 Nominal diameter of pre-dilation balloon (mm)2.60 ± 0.362.64 ± 0.350.236
 Maximal pressure during pre-dilation (atm)12.2 ± 3.012.5 ± 3.10.300
Device implantation
 Nominal diameter of device0.139
 2.5 mm52 (16.6)17 (10.2)
 2.75 mm0 (0)1 (0.6)
 3.0 mm190 (60.7)107 (64.1)
 3.5 mm71 (22.7)42 (25.1)
 Maximal pressure during device implantation (atm)13.1 ± 2.713.8 ± 2.50.008
 Expected inner device diameter (mm)3.34 ± 0.333.28 ± 0.330.109
Post-dilation
 Post-dilation performed194 (62.0)102 (61.1)0.844
 Nominal diameter of post-dilation balloon (mm)3.16 ± 0.343.28 ± 0.370.01
 Maximal pressure during post-dilation (atm)§15.3 ± 3.216.7 ± 3.40.001
 Expected diameter of post-dilation balloon (mm)§3.27 ± 0.353.40 ± 0.390.003
Maximal expected diameter of balloon (with or without post-dilation) (mm)3.37 ± 0.333.38 ± 0.360.896

Values are n (%) or mean ± SD.

  • p < 0.05.

  • Data were available in 477 lesions.

  • Data were available in 292 lesions.

  • § Data were available in 290 lesions.