Table 2 Lesion and procedural characteristics
OCT-guided RA (33 lesions) | IVUS -guided RA (51 lesions) | P value | |
|---|---|---|---|
Target vessel | |||
LM | 1 (3.0%) | 5 (9.8%) | 0.457 |
LAD | 23 (69.7%) | 33 (64.7%) | 0.636 |
LCX | 1 (3.0%) | 5 (9.8%) | 0.457 |
RCA | 8 (24.2%) | 8 (15.7%) | 0.329 |
Sever calcification | 31 (93.9%) | 48 (94.1%) | 1.000 |
Lesion type B2/C | 30 (90.9%) | 48 (94.1%) | 0.544 |
Angulation | 8 (24.2%) | 17 (33.3%) | 0.373 |
Bifurcation | 7 (21.2%) | 17 (33.3%) | 0.230 |
Multi-vessel coronary disease | 24 (72.7%) | 41 (80.4%) | 0.412 |
Radial access | 26 (78.8%) | 32 (62.7%) | 0.120 |
Initial burr size, mm | 1.5 (1.5,1.5) | 1.5 (1.25,1.5) | 0.167 |
Maximal burr diameter, mm | 1.5 (1.5,1.5) | 1.5 (1.25,1.5) | 0.290 |
More than 1 burr | 3 (9.1%) | 5 (9.8%) | 0.913 |
Burr to artery ratio | 0.55 ± 0.5 | 0.54 ± 0.6 | 0.518 |
Use of Scoring balloon after RA | 11 (33.3%) | 2 (3.9%) | 0.001 |
Pre-dilation balloon size, mm | 2.6 ± 0.3 | 2.7 ± 0.3 | 0.548 |
Max pre-dilation pressure, atm | 17.6 ± 4.6 | 16.9 ± 4.4 | 0.471 |
Number of stents implanted | 2.1 ± 0.6 | 2.0 ± 0.6 | 0.658 |
Mean stent diameter, mm | 2.9 ± 0.4 | 3.0 ± 0.3 | 0.689 |
Total stent length, mm | 63.8 ± 23.1 | 61.8 ± 20.5 | 0.526 |
Post-dilation balloon size, mm | 3.2 ± 0.4 | 3.3 ± 0.4 | 0.714 |
Max post-dilation pressure, atm | 20.7 ± 2.9 | 20.8 ± 2.9 | 0.811 |
Procedure time, min | 100 (80,140) | 95 (80,120) | 0.515 |
Radiation exposure, mGy | 1041 (845,1800) | 1188 (853,2013) | 0.618 |
Contrast volume, ml | 348.8 ± 110.6 | 275.2 ± 76.8 | 0.002 |
Procedure cost, yuan | 114,165 ± 31,975 | 107,380 ± 31,252 | 0.340 |