Table 2.
Angiographic and procedural characteristics (n = 115 lesions).
| SCB (n = 47) | RA (n = 68) | p value | |
|---|---|---|---|
| Angiographic characteristics | |||
| Location | 0.84 | ||
| Left main | 12 (25.5%) | 15 (22.1%) | |
| Left anterior descending | 28 (59.6%) | 43 (63.2%) | |
| Left circumflex | 5 (10.6%) | 8 (11.8%) | |
| Right coronary artery | 2 (4.3%) | 2 (2.9%) | |
| Reference vessel diameter (mm) | 3.27 ± 0.46 | 3.26 ± 0.45 | 0.87 |
| Lesion length (mm) | 26.06 ± 13.84 | 27.34 ± 14.83 | 0.64 |
| Diameter stenosis (%) | 83.57 ± 8.99 | 85.94 ± 9.63 | 0.19 |
| Ostial location | 15 (31.9%) | 31 (45.6%) | 0.14 |
| Angle > 70% between MB and SB | 18 (38.3%) | 23 (33.8%) | 0.62 |
| SB > 2 mm | 41 (87.2%) | 54 (79.4%) | 0.28 |
| True bifurcation lesions∗ | 23 (49%) | 29 (43%) | 0.50 |
| Medina classification | |||
| 1.1.0 | 19 (40.4%) | 30 (44.1%) | |
| 1.1.1 | 18 (38.3) | 26 (38.2%) | |
| 1.0.1 | 2 (4.2%) | 1 (1.5%) | |
| 1.0.0 | 0 | 1 (1.5%) | |
| 0.1.1 | 2 (4.2%) | 1 (1.5%) | |
| 0.1.0 | 5 (10.6%) | 8 (11.7%) | |
| 0.0.1 | 1 (2.1%) | 1 (1.5%) | |
|
| |||
| Procedural characteristics | |||
| SCB or RA in SB | 3 (6.3%) | 2 (2.9%) | 0.38 |
| Wire in SB | 28 (59.7%) | 36 (52.9%) | 0.48 |
| SB kissing or balloon dilation after stenting | 17 (36.2%) | 26 (38.2%) | 0.82 |
| Stenting technique | 0.75 | ||
| One-stent technique | 36 (76.6%) | 51 (75%) | |
| Two-stent technique | 10 (21.3%) | 17 (25%) | |
| Culotte | 6 (12.8%) | 6 (8.8%) | |
| T-stenting | 1 (2.1%) | 2 (2.9%) | |
| DK-crush | 0 | 1 (1.5%) | |
| Minicrush | 1 (2.1%) | 1 (1.5%) | |
| TAP stenting | 2 (4.2%) | 7 (10.3%) | |
| No stent | 1 (2.1%) | 0 | |
| Stenting of the SB | 10 (21.3%) | 17 (25%) | 0.85 |
| Elective | 7 (14.9%) | 11 (16.2%) | |
| Bailout | 3 (6.4%) | 6 (8.8%) | |
| POT | 28 (59.6%) | 42 (61.8%) | 0.81 |
| LMT involvement during the PCI | 21 (44.7%) | 28 (41.2%) | 0.71 |
| Cutting/scoring balloon diameter (mm) | 3.04 ± 0.32 | — | — |
| Cutting/scoring balloon pressure (atm) | 15.30 ± 2.3 | — | — |
| Starting burr size (mm) | — | 1.51 ± 0.17 | — |
| Max. burr size (mm) | — | 1.53 ± 0.17 | — |
| Use of >1 burr | — | 6 (8.8%) | -— |
| Rotational speed (RPM) | — | 164,895 ± 22,038 | — |
| Number of predilatation balloons | 1.74 ± 0.85 | 1.75 ± 0.98 | 0.95 |
| Max. predilatation balloon diameter (mm) | 2.78 ± 0.47 | 2.90 ± 0.38 | 0.16 |
| Max. predilatation balloon pressure (atm) | 18.22 ± 3.43 | 19.50 ± 5.08 | 0.20 |
| No. of stents/lesions | 1.85 ± 0.92 | 1.50 ± 0.68 | 0.02 |
| Total stent length/lesion (mm) | 37.09 ± 17.63 | 33.88 ± 15.71 | 0.31 |
| Min. stent diameter (mm) | 3.14 ± 0.41 | 3.08 ± 0.47 | 0.50 |
| Max. stent diameter (mm) | 3.43 ± 0.41 | 3.30 ± 0.40 | 0.09 |
| Max. stent implantation pressure (atm) | 16.61 ± 2.83 | 16.92 ± 3.32 | 0.57 |
| Balloon postdilatation | 41 (87.2%) | 62 (91.1%) | 0.50 |
| Max. postdilatation balloon diameter (mm) | 3.56 ± 0.56 | 3.65 ± 0.53 | 0.06 |
| Max. postdilatation balloon pressure (atm) | 20.54 ± 3.23 | 21.13 ± 4.10 | 0.44 |
| Procedural result on SB | |||
| Compromised at any time during the procedure | 25 (53.2%) | 28 (41.2%) | 0.20 |
| Compromised at the end of the procedure | 15 (31.9%) | 5 (7.4%) | 0.001 |
| Mechanism of SB compromise | |||
| Significant stenosis | 13 (27.7%) | 4 (5.9%) | |
| Dissection | 2 (4.3%) | 1 (1.5%) | |
| TIMI flow <3 in SB | 4 (8.5%) | 2 (3%) | |
Values are n (%) or mean ± SD; DK-crush = double kissing crush; MB = main branch; LMT = left main trunk; POT = proximal optimization technique; RPM = rotations per minute; RA = rotational atherectomy; SB = side branch; SCB = scoring/cutting balloon; TAP = T-and-protrusion technique. ∗True bifurcation lesions: Medina 1.1.1, 1.0.1, and 0.1.1.