Table 5.
Comparison of patient information and target vessel characteristics according to percent QFR increase of the target vessel.
|
Low %QFR increase ≤23%
(n = 62) |
High %QFR increase >23%
(n = 178) |
t/Z/χ2 | P | |
|---|---|---|---|---|
| Male (%) | 47 (75.8) | 134 (75.3) | 0.007 | 0.934 |
| Age (years) | 61.53 ± 10.54 | 63.29 ± 9.83 | 1.188 | 0.236 |
| Hypertension (%) | 20 (32.3) | 71 (39.9) | 1.137 | 0.286 |
| Duration of hypertension (years) | 12.00 (7.00, 15.75) | 10.00 (3.00, 18.00) | 0.062 | 0.950 |
| Diabetes mellitus (%) | 19 (30.6) | 46 (25.8) | 0.537 | 0.464 |
| Duration of diabetes mellitus (years) | 5.00 (2.00, 8.00) | 5.00 (3.00, 9.00) | 0.737 | 0.461 |
| Current smoking (%) | 30 (48.4) | 77 (43.3) | 0.490 | 0.484 |
| Current smoking cigarettes per day | 20.00 (10.00, 20.00) | 15.00 (5.00, 20.00) | 1.124 | 0.261 |
| Duration of smoking (years) | 15.00 (8.75, 23.50) | 19.00 (13.75, 25.50) | 1.788 | 0.074 |
| Current drinking (%) | 17 (27.4) | 39 (21.9) | 0.780 | 0.377 |
| Family history of CAD (%) | 8 (12.9) | 21 (11.8) | 0.053 | 0.818 |
| History of myocardial infarction | 6 (9.7) | 13 (7.3) | 0.356 | 0.551 |
| Previous PCI (%) | 16 (25.8) | 51 (28.7) | 0.185 | 0.667 |
| Clinical presentation | 2.994 | 0.084 | ||
| Unstable angina pectoris | 51 (82.3) | 161 (90.4) | ||
| NSTEMI | 11 (17.7) | 17 (9.6) | ||
| Average heart rate (beats/min) | 71.29 ± 7.29 | 70.01 ± 6.68 | 1.268 | 0.206 |
| SDNN | 113.50 (81.50, 136.00) | 110.00 (90.75, 134.25) | 0.120 | 0.904 |
| SDANN | 99.50 (73.25, 120.50) | 90.50 (73.00, 109.25) | 1.667 | 0.096 |
| rMSSD | 41.00 (25.75, 61.50) | 41.50 (28.75, 66.00) | 0.681 | 0.496 |
| Pnn50 | 7.00 (2.75, 18.25) | 7.00 (3.00, 15.00) | 0.332 | 0.740 |
| Total power (ms2) | 1,933.05 (1,290.48, 2,820.45) | 2,039.40 (1,361.50, 3,251.30) | 0.801 | 0.423 |
| LF (ms2) | 119.65 (53.06, 212.74) | 144.25 (93.51, 246.23) | 2.658 | 0.008 |
| HF (ms2) | 109.60 (60.85,227.50) | 131.20 (67.78, 252.13) | 0.943 | 0.346 |
| LF/HF | 0.92 (0.62, 1.50) | 1.28 (0.76, 1.82) | 2.618 | 0.009 |
| DC 24h ms | 2.84 ± 1.50 | 2.79 ± 1.35 | 0.214 | 0.830 |
| Target vessel characteristics | ||||
| Number of diseased vessels | 2.15 ± 0.88 | 2.14 ± 0.82 | 0.038 | 0.970 |
| Number of implanted stents | 1.77 ± 0.95 | 1.83 ± 1.06 | 0.339 | 0.735 |
| Target vascular location | 3.776 | 0.151 | ||
| LAD | 35 (56.5) | 79 (44.4) | ||
| LCX | 13 (21.0) | 36 (20.2) | ||
| RCA | 14 (22.6) | 63 (35.4) | ||
| Minimal lumen diameter | 0.87 ± 0.38 | 0.84 ± 0.38 | 0.549 | 0.583 |
| Maximum area stenosis | 81.43 ± 9.07 | 85.11 ± 9.83 | 2.552 | 0.011 |
| Lesion length of target vessels | 16.30 (11.30, 25.93) | 16.40 (10.20, 25.90) | 0.625 | 0.532 |
| Pre-PCI QFR | 0.72 ± 0.08 | 0.65 ± 0.08 | 5.989 | <0.001 |
| % QFR increase | 0.16 (0.12, 0.20) | 0.40 (0.31, 0.55) | 11.473 | <0.001 |
| Post-PCI QFR | 0.86 (0.80, 0.91) | 0.94 (0.91, 0.97) | 7.146 | <0.001 |