Table 2.
Procedural characteristics in patients with and without residual ischemia
| Total (N = 1170) | Residual ischemia group (n = 155) | No residual ischemia group (n = 1015) | |
|---|---|---|---|
| Trans-radial intervention | 981 (83.8) | 135 (87.1) | 846 (83.3) |
| IVUS guidance | 597 (51.0) | 69 (44.5) | 528 (52.0) |
| Stent type | |||
| First-generation DES | 101 (8.6) | 91 (9.0) | 10 (6.5) |
| Second-generation DES | 1069 (91.4) | 924 (91.0) | 145 (93.5) |
| Total number of stents per LM lesion | 1.79 ± 0.76 | 1.75 ± 0.74 | 1.79 ± 0.76 |
| Total stent length per LM lesion, mm | 35.5 ± 19.6 | 34.4 ± 18.9 | 35.7 ± 19.7 |
| Mean LM stent diameter, mm | 3.41 ± 0.45 | 3.33 ± 0.41 | 3.42 ± 0.45 |
| Treatment strategy | |||
| Provisional one-stent technique | 871 (74.4) | 137 (88.4) | 734 (72.3) |
| Two-stent technique | 299 (25.6) | 18 (11.6) | 281 (27.7) |
| Culotte | 55 (18.4) | 1 (5.6) | 54 (19.2) |
| Crush | 192 (64.2) | 12 (66.7) | 180 (64.1) |
| T-stent | 36 (12.0) | 3 (16.7) | 33 (11.7) |
| V or simultaneous kissing stent | 16 (5.4) | 2 (11.1) | 14 (5.0) |
| POT performed | 601 (51.4) | 89 (57.4) | 512 (50.4) |
| LM bifurcation with FKBI | 581 (49.7) | 55 (35.5) | 526 (51.8) |
| Provisional one-stent technique | 315 (36.2) | 38 (27.7) | 277 (37.7) |
| Two-stent technique | 266 (89.0) | 17 (94.4) | 249 (88.6) |
| Post-dilation performed | 1055 (90.2) | 139 (89.7) | 916 (90.2) |
| IABP utilization | 43 (3.7) | 5 (3.2) | 38 (3.7) |
| Angiographic successa | 1115 (95.3) | 146 (94.2) | 969 (95.5) |
| Residual SYNTAX score | 4.2 ± 5.1 | 7.1 ± 6.5 | 3.8 ± 4.7 |
| Post-PCI physiology assessment | |||
| Post-PCI LAD μQFR | 0.95 ± 0.07 | 0.87 ± 0.15 | 0.96 ± 0.04 |
| Post-PCI LCX μQFR | 0.91 ± 0.10 | 0.72 ± 0.17 | 0.93 ± 0.05 |
Data are mean (SD), n (%), median (IQR), or n/N (%).
DES, drug-eluting stent; IVUS, intravenous ultrasound; POT, proximal optimization technique; FKBI, final kissing balloon inflation; IABP, intra-aortic balloon pulsation; other abbreviations as in Table 1.
Angiographic success defined as (i) residual stenosis less than 30% for main vessel treated with stents and less than 50% for side branch treated with balloon angioplasty by visual estimation, with thrombolysis in myocardial infarction flow Grade 3 in both main vessel and side branch for LM bifurcation patients treated with one-stent technique, or (ii) residual stenosis less than 30% by visual estimation with thrombolysis in myocardial infarction flow Grade 3 in both main vessel and side branch for LM bifurcation patients treated with two-stent technique.