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Table 3 Angiographic and IVUS/IVUS-VH outcomes of ABSORB II trial

From: Bioresorbable scaffolds: a new paradigm in percutaneous coronary intervention

  Bioresorbable scaffold group (n=335) Metallic stent group (n=166) Difference (95 % CI) p
Angiographic analysis     
 Lesion length obstruction (mm) 13.8 (6.5) 13.8 (6.6) 0.00 (−1.18, 1.18) 1.00
 Total scaffolded/stented length (mm) 21.1 (8.8) 20.9 (7.4) 0.24 (−1.17, 1.65) 0.74
Reference vessel diameter     
 Pre-procedure diameter (mm) 2.59 (0.38) 2.63 (0.40) −0.03 (−0.10, 0.04) 0.36
 Postprocedure diameter (mm) 2.64 (0.36) 2.80 (0.34) −0.16 (−0.22, −0.09) <0.001
Minimum lumen diameter     
 Pre-procedure diameter (mm) 1.07 (0.32) 1.05 (0.32) 0.02 (−0.03, 0.08) 0.44
 Post-procedure in-stent or in-scaff old diameter (mm) 2.22 (0.33) 2.50 (0.33) −0.28 (−0.34, −0.22) <0.001
 In-stent/in-scaff old acute gain (mm) 1.15±0.38 1.46±0.38 −0.30 (−0.37, −0.24) <0.001
Diameter stenosis     
 Pre-procedure percent diameter stenosis (%) 59±11 % 60±12 % −1.07 (−3.11, 0.97) 0.30
 Post-procedure in-stent/in-scaffold diameter stenosis (%) 16±7 % 10±5 % 5.37 (4.38, 6.36) <0.001
Pre-procedural fibrotic tissue (%) 31.47±11.39 30.62±11.42 0.85 (−1.33, 3.04) 0.44
Pre-procedural fibrofatty tissue (%) 47.43±16.91 48.55±16.86 −1.12 (−4.35, 2.11) 0.50
Pre-procedural necrotic core (%) 16.20±6.86 16.15±6.90 0.05 (−1.27, 1.37) 0.94
Pre-procedural dense calcium (%) 4.90±4.73 4.68±4.10 0.22 (−0.61, 1.05) 0.60
Vessel area     
 Pre-procedure area (mm2) 11.51±3.40 12.34±3.42 −0.83 (−1.47, −0.19) 0.02
 Post-procedure area (mm2) 13.17±3.55 14.28±3.59 −1.11 (−1.78, −0.44) 0.001
Plaque area     
 Pre-procedure plaque area (mm2) 6.67±2.52 7.30±2.68 0.6 (−1.12, 0.13) 0.01
 Post-procedure plaque area (mm2) 7.11±2.46 7.43±2.44 −0.32 (−0.78, 0.14) 0.18
Mean lumen area     
 Pre-procedure mean lumen area (mm2) 4.84±1.39 5.02±1.47 −0.19 (−0.47, 0.08) 0.16
 Post-procedure mean lumen area (mm2) 6.06±1.44 6.85±1.60 −0.80 (−1.09, −0.50) <0.001
Minimal lumen area     
 Pre-procedure minimal lumen area (mm2) 2.04±0.72 2.13±0.83 −0.10 (−0.25, 0.05) 0.20
 Post-procedure minimal lumen area (mm2) 4.89±1.38 5.73±1.51 −0.84 (−1.12, −0.57) <0.001
 Acute gain in minimal lumen area (mm2) 2.85±1.25 3.60±1.34 −0.75 (−0.99, −0.50) <0.001