Table 2.
Angiography and percutaneous coronary intervention characteristics
| Variables | PCI-only (n = 6268) | FFR-guided group (n = 1090) |
||
|---|---|---|---|---|
| All (n = 1090) | FFR-Perform (n = 369) | FFR-Defer (n = 721) | ||
| RCA stenosis ≥70%, n (%) | 3134 (50.0)* | 293 (26.8) | 125 (33.8) | 168 (23.0)‡ |
| LMCA stenosis ≥50%, n (%) | 205 (3.2)* | 9 (0.8) | 1 (0.3) | 8 (1.1) |
| LAD stenosis ≥70%, n (%) | 3474 (55.4)* | 419 (38.4) | 233 (63.1) | 186 (26.0)† |
| LCX stenosis ≥70%, n (%) | 2620 (41.7)* | 250 (22.9) | 104 (28.1) | 146 (20.2) |
| FFR in LMCA, n (%) | — | 37 (3.3) | 3 (0.8) | 34 (4.7)† |
| FFR 0.75–0.80, n (%) | 1 (0.1) | 0 | 1 (0.1) | |
| FFR in LAD, n (%) | — | 713 (65.4) | 244 (66.1) | 469 (65.0) |
| FFR 0.75–0.80, n (%) | 149 (13.7) | 87 (27.4) | 62 (8.6)† | |
| FFR in LCX, n (%) | — | 192 (17.6) | 51 (13.8) | 141 (19.5)† |
| FFR 0.75–0.80, n (%) | 22 (2.0) | 14 (3.8) | 8 (1.1)† | |
| FFR in RCA, n (%) | — | 213 (19.5) | 70 (18.9) | 143 (19.8) |
| FFR 0.75–0.80, n (%) | 37 (3.4) | 22 (6.0) | 15 (2.1)† | |
| FFR in graft, n (%) | — | 23 (2.1) | 4 (1.0) | 19 (2.6) |
| FFR 0.75–0.80, n (%) | 2 (0.2) | 0 | 2 (0.3) | |
| Median FFR value (IQR) | — | 0.77 (0.72, 0.82) | 0.87 (0.82, 0.91)† | |
| PCI in native LM, n (%) | 262 (4.1)*,‡ | 7 (0.6) | 6 (1.6) | 1 (0.1)‡ |
| PCI in native LAD, n (%) | 2846 (45.4)*,† | 299 (27.4) | 260 (70.4) | 39 (5.4)† |
| PCI in native LCX, n (%) | 1867 (29.7)*,† | 124 (11.3) | 79 (21.4) | 45 (6.2)† |
| PCI in native RCA, n (%) | 2118 (33.7)*,‡ | 147 (13.4) | 97 (26.2) | 50 (6.9)† |
| Vein graft intervention, n (%) | 475 (7.5)*,† | 6 (0.5) | 3 (0.8) | 3 (0.4) |
| Number of vessel treated, n (%) | ||||
| 1 | 5078 (81.0) | — | 296 (80.2) | — |
| 2 | 1087 (17.3) | — | 71 (19.2) | — |
| 3 | 99 (1.7) | — | 2 (0.6) | — |
| Use of DES, n (%) | 4417 (70.4)* | 361 (33.1) | 273 (73.9) | 88 (12.2)† |
| Use of BMS, n (%) | 1632 (26.0)* | 118 (10.8) | 88 (23.8) | 30 (4.2)† |
| Number of stents placed | 1.5 ± 1.0*,‡ | 0.6 ± 0.9 | 1.4 ± 0.7 | 0.2 ± 0.7† |
| Procedural success of stents placement, n (%) | 5953 (94.9)‡ | — | 359 (97.3) | — |
BMS, bare metal stent; DES, drug-eluting stent; FFR, fractional flow reserve; LAD, left anterior descending; LCX, left circumflex; LMCA, left main coronary artery; PCI, percutaneous coronary intervention; RCA, right coronary artery.
*P < 0.001 when compared with the FFR-guided group.
‡P < 0.05 when compared with the FFR-Perform group.
†P < 0.001 when compared with the FFR-Perform group.