Table 2. Demographic, and PCI findings of rotational atherectomy with IABP implant before PCI (RA with primary IABP) vs. RA with IABP implant during or after PCI (RA with bailout IABP) cases in the study period.
| Variables | Both (N = 63) | Primary IABP (N = 51) | Bailout IABP (N = 12) | p-value* |
| Rotablation vessels | 0.059 | |||
| LM (N, %) | 1 (1.6%) | 1 (2.0%) | 0 | |
| LAD (N, %) | 38 (60.3%) | 32 (62.7%) | 6 (50.0%) | |
| LCX (N, %) | 1 (1.6%) | 0 | 1 (8.3%) | |
| RCA (N, %) | 6 (9.5%) | 3 (5.9%) | 3 (25.0%) | |
| LM + LAD (N, %) | 1 (1.6%) | 1 (2.0%) | 0 | |
| LM + LCX (N, %) | 1 (1.6%) | 1 (2.0%) | 0 | |
| LAD + LCX (N, %) | 8 (12.7%) | 8 (15.7%) | 0 | |
| LAD + RCA (N, %) | 2 (3.2%) | 1 (2.0%) | 1 (8.3%) | |
| LCX + RCA (N, %) | 1 (1.6%) | 0 | 1 (8.3%) | |
| LM + LAD + LCX (N, %) | 3 (4.8%) | 3 (5.9%) | 0 | |
| LM + LAD + RCA (N, %) | 1 (1.6%) | 1 (2.0%) | 0 | |
| Access site | 0.020 | |||
| Radial (N, %) | 4 (6.3%) | 1 (2.0%) | 3 (25.0%) | |
| Femoral (N, %) | 59 (93.7%) | 50 (98.0%) | 9 (75.0%) | |
| Guide size | 1.000 | |||
| 6F (N, %) | 13 (20.6%) | 11 (21.6%) | 2 (16.7%) | |
| 7F (N, %) | 50 (79.4%) | 40 (78.4%) | 10 (83.3%) | |
| Syntax score# | 38.1 ± 10.6 | 38.8 ± 10.1 | 35.0 ± 12.2 | 0.263 |
| Syntax score post-PCI# | 10.0 ± 10.3 | 8.8 ± 8.9 | 15.0 ± 14.1 | 0.169 |
| Syntax score gain# | 28.1 ± 11.2 | 30.0 ± 10.9 | 20.0 ± 9.0 | 0.005 |
| Rotablation completed | 61 (96.8%) | 50 (98.0%) | 11 (91.7%) | 0.347 |
| Largest burr size | 0.058 | |||
| 1.25 mm (N, %) | 9 (14.3%) | 7 (13.7%) | 2 (16.7%) | |
| 1.5 mm (N, %) | 42 (66.7%) | 37 (72.5%) | 5 (41.7%) | |
| 1.75 mm (N, %) | 12 (19.0%) | 7 (13.7%) | 5 (41.7%) | |
| Stenting (N, %) | 59(93.7%) | 50 (98.0%) | 9 (75.0%) | 0.020 |
| BMS (N, %) | 11 (18.6%) | 7 (14.0%) | 4 (44.4%) | 0.053 |
| DES (N, %) | 48 (81.4%) | 43 (86.0%) | 5 (55.6%) | |
| Stent size (mm) | 2.7 ± 0.4 | 2.7 ± 0.4 | 2.8 ± 0.2 | 0.292 |
| Total stent length (mm) | 61.8 ± 29.2 | 63.2 ± 29.6 | 54.0 ± 27.2 | 0.390 |
| Rotablation vessel characteristics† | ||||
| Total lesion length (mm) | 58.5 ± 26.4 | 59.7 ± 26.9 | 53.0 ± 24.8 | 0.447 |
| Heavy calcification | 62 (100%) | 50 (100%) | 12 (100%) | N/A |
| Tortuosity | 18 (29.0%) | 15 (30.0%) | 3 (25.0%) | 1.000 |
| Ostial lesion (N, %) | 26 (41.9%) | 24 (48.0%) | 2 (16.7%) | 0.048 |
| Bifurcation (N, %) | 25 (40.3%) | 24 (48.0%) | 1 (8.3%) | 0.019 |
| Chronic total occlusion | 9 (14.5%) | 5 (10.0%) | 4 (33.3%) | 0.062 |
| ACC/AHA lesion (N, %) | 0.482 | |||
| B2 | 3 (4.8%) | 2 (4.0%) | 1 (8.3%) | |
| C | 59 (95.2%) | 48 (96.0%) | 11 (91.7%) | |
| Total procedure time (min) | 191.6 ± 71.5 | 184.8 ± 74.4 | 220.7 ± 50.0 | 0.119 |
| Total fluoro time (min) | 55.9 ± 29.5 | 54.5 ± 29.5 | 61.9 ± 30.1 | 0.439 |
| Total contrast dose (ml) | 195.5 ± 81.4 | 189.4 ± 61.4 | 243.5 ± 176.4 | 0.489 |
* RA with primary IABP vs. RA with bailout IABP; # Residual syntax score in patients with prior CABG; † One patient in RA with primary IABP with incomplete angiography DICOM was excluded.
ACC/AHA, American College of Cardiology/American Heart Association; BMS, bare metal stent; CABG, coronary artery bypass grafting; DES, drug-eluting stent; DICOM, Digital Imaging and Communications in Medicine; IABP, intra-aortic balloon pump; LAD, left anterior descending artery; LCX, left circumflex artery; LM, left main coronary artery; PCI, percutaneous coronary intervention; RA, rotational atherectomy; RCA, right coronary artery.