Table 2

Lesion and Procedure Characteristics

Proximal LAD (N = 2,534 Patients, N = 3,871 Lesions)Nonproximal LAD (N = 6,172 Patients, N = 8,419 Lesions)p Value
Vessel location per lesion<0.001
 LAD (mid and distal)79.2 (3,067/3,871)31.6 (2,660/8,419)
 Left circumflex9.9 (383/3,871)28.7 (2,414/8,419)
 Right coronary artery10.5 (405/3,871)38.3 (3,221/8,419)
 Left main0.4 (16/3,871)1.0 (88/8,419)
 Bypass graft0.0 (0/3,871)0.4 (36/8,419)
 In-stent restenosis1.0 (39/3,871)1.1 (89/8,418)0.849
Lesion type0.277
 Restenosis after previous PTCA0.3 (11/3,871)0.4 (33/8,418)
 In-stent restenosis1.0 (39/3,871)1.1 (89/8,418)
Total stent length per patient, mm33.5 ± 22.130.3 ± 20.1<0.001
Chronic total occlusion2.2 (85/3,871)3.1 (260/8,416)0.006
Bifurcation21.0 (812/3,871)14.3 (1,203/8,416)<0.001
Moderate/severe calcification29.2 (1,131/3,871)28.9 (2,428/8,416)0.684
Moderate/severe tortuosity18.8 (729/3,870)24.7 (2,087/8,414)0.684
TIMI flow grade 0/113.3 (516/3,871)15.7 (1,326/8,416)<0.001
Thrombus8.1 (313/3,871)7.6 (640/8,416)0.364
ACC/AHA lesion class B2/C56.1 (2,170/3,870)54.1 (4,550/8,415)0.039
Reference vessel diameter (mm)3.0 ± 0.5 (3,866)2.9 ± 0.5 (8,400)<0.001
Minimum lumen diameter (mm)0.5 ± 0.4 (3,866)0.5 ± 0.4 (8,403)0.001
Diameter stenosis (%)82.5 ± 12.5 (3,867)82.9 ± 13.0 (8,408)0.069
Lesion length (mm)17.7 ± 8.6 (3,866)17.7 ± 9.4 (8,400)0.808
Procedure characteristics
 No. of vessels treated per patient1.3 ± 0.5 (2,534)1.2 ± 0.4 (6,172)<0.001
 No. of lesions treated per patient1.5 ± 0.8 (2,534)1.3 ± 0.7 (6,172)<0.001
 No. of stents per patient1.7 ± 1.0 (2,534)1.6 ± 0.9 (6,172)<0.001
 No. of stents per lesion1.1 ± 0.4 (3,871)1.2 ± 0.5 (8,419)0.009
 Lesions with pre-dilatation67.5 (2,612/3,871)68.9 (5,801/8,419)0.117
Post-procedure characteristics
 Residual stenosis (%)2.0 ± 9.0 (3,868)2.1 ± 10.0 (8,414)0.319
 TIMI flow grade 2/399.6 (3,854/3,871)99.4 (8,365/8,418)0.245

Values are % (n/N) or mean ± SD.

ACC/AHA = American College of Cardiology/American Heart Association; PTCA = percutaneous coronary angioplasty; TIMI = Thrombolysis In Myocardial Infarction.

  • TIMI flow grade 0, no unstable angina, no myocardial infarction within 72 h.