Table 1.
Patient and Procedural Characteristics
| QFR ≤0.80 (n=35) | QFR >0.80 (n=582) | P Value | |
|---|---|---|---|
| Patient characteristics (patient‐level) | |||
| Women, n (%) | 10 (28.6) | 133 (22.9) | 0.415 |
| Age, y | 63.1±11.4 | 60.7±11.6 | 0.232 |
| BMI, kg/m2 | 27.3±3.5 | 27.0±4.0 | 0.730 |
| Diabetes mellitus, n (%) | 8 (22.9) | 78 (13.4) | 0.130 |
| Hypertension, n (%) | 22 (62.9) | 262 (45.0) | 0.054 |
| Hypercholesterolemia, n (%) | 25 (71.4) | 323 (55.8) | 0.080 |
| Family history of CAD, n (%) | 13 (38.2) | 185 (32.2) | 0.457 |
| Killip I or II, n (%) | 33 (94.3) | 577 (99.1) | 0.055 |
| Killip IV, n (%) | 1 (2.9) | 3 (0.5) | 0.209 |
| Left ventricular function, % | 49.1±10.4 | 48.7±10.3 | 0.840 |
| MI SYNTAX score | 16.2±10.9 | 11.1±7.6 | <0.001 |
| Procedural characteristics (patient‐level) | |||
| Infarct vessel | 0.003 | ||
| LM artery, n (%) | 0 (0.0) | 1 (0.2) | |
| LAD artery, n (%) | 5 (14.3) | 251 (43.1) | |
| LCX artery, n (%) | 7 (20.0) | 80 (13.7) | |
| RCA, n (%) | 23 (65.7) | 250 (43.0) | |
| Lesions in infarct vessel, n | 1.03 (0.17) | 1.09 (0.33) | 0.236 |
| Type of intervention | 0.209 | ||
| PCI—implantation of stent(s), n (%) | 34 (97.1) | 579 (99.5) | |
| PCI—only balloon dilatation, n (%) | 1 (2.9) | 3 (0.5) | |
| Stents per lesion, n | 1.37±0.81 | 1.41±0.72 | 0.766 |
| Total stent length per lesion, mm | 28.4±15.5 | 26.8±13.4 | 0.505 |
| Average stent diameter, mm | 3.24±0.49 | 3.20±0.41 | 0.569 |
| Direct stenting, n (%) | 11 (32.4) | 175 (30.2) | 0.848 |
| Maximal balloon pressure, atm | 16.3±3.5 | 15.3±3.2 | 0.073 |
| Thrombus aspiration, n (%) | 23 (65.7) | 353 (60.7) | 0.597 |
| Nontarget vessel (patient‐level) | n=35 | n=582 | <0.001 |
| LAD artery, n (%) | 27 (77.1) | 183 (31.4) | |
| LCX artery, n (%) | 1 (2.9) | 255 (43.8) | |
| RCA, n (%) | 7 (20.0) | 144 (24.7) | |
| DS ≥50% by 3D QCA, n (%) | 23 (65.7) | 38 (6.5) | <0.001 |
| Nontarget vessel (vessel‐level) | n=36 | n=910 | <0.001 |
| LAD artery, n (%) | 28 (77.8) | 226 (24.8) | |
| LCX artery, n (%) | 1 (2.8) | 463 (50.9) | |
| RCA, n (%) | 7 (19.4) | 221 (24.3) | |
| DS ≥50% by 3D QCA, n (%) | 24 (66.7) | 43 (4.7) | <0.001 |
Values are mean±SD or number (percentage). 3D indicates 3‐dimensional; BMI, body mass index; CAD, coronary artery disease; DS, diameter stenosis; LAD, left anterior descending; LCX, left circumflex; LM, left main; MI SYNTAX, Myocardial Infarction TAXus and Cardiac Surgery; PCI, percutaneous coronary intervention; QCA, quantitative coronary angiography; RCA, right coronary artery; and QFR, quantitative flow ratio.