Table 1. Baseline demographic and angiographic characteristics of fQRS(+) and fQRS(−) groups.
| fQRS(+) group (n = 126) | fQRS(–) group (n = 90) | p value | |
| Age, years | 60.63 ± 10.69 | 58.84 ± 11.41 | 0.242 |
| Men, n (%) | 95 (75.40) | 66 (73.33) | 0.753 |
| Current smoker, n (%) | 71 (56.35) | 58 (64.44) | 0.262 |
| Hypertension, n (%) | 61 (48.41) | 47 (52.22) | 0.679 |
| Hyperlipidemia, n (%) | 87 (68.66) | 42 (46.67) | 0.001 |
| Diabetes, n (%) | 31 (24.60) | 15 (16.67) | 0.180 |
| Medical history of MI, n (%) | 16 (12.70) | 5 (5.56) | 0.047 |
| Previous PCI, n (%) | 17 (13.49) | 11 (12.22) | 0.840 |
| SBP, mmHg | 113.89 ± 27.32 | 117.12 ± 29.91 | 0.096 |
| DBP, mmHg | 70.50 ± 17.33 | 69.30 ± 15.90 | 0.295 |
| Reperfusion time, min | 275.00 ± 189.82 | 275.82 ± 192.44 | 0.977 |
| Door-to-balloon time, min | 71.16 ± 25.64 | 70.30 ± 22.99 | 0.799 |
| Pre-TIMI flow, n (%) | |||
| 0 | 82 (65.08) | 55 (61.11) | 0.569 |
| I | 25 (19.84) | 21 (23.33) | 0.614 |
| II | 7 (5.56) | 7 (7.78) | 0.581 |
| III | 10 (7.94) | 9 (10.00) | 0.632 |
| Post-TIMI flow, n (%) | |||
| 0 | 2 (1.59) | 0 (0.00) | - |
| I | 0 (0.00) | 0 (0.00) | - |
| II | 26 (20.63) | 13 (14.44) | 0.284 |
| III | 98 (77.78) | 77 (85.56) | 0.163 |
| NYHA class, n (%) | |||
| I | 80 (63.50) | 83 (92.22) | < 0.001 |
| II | 9 (7.14) | 3 (3.33) | 0.367 |
| III | 16 (12.70) | 3 (3.33) | 0.026 |
| IV | 11 (8.73) | 1 (1.11) | 0.016 |
| Culprit lesion, n (%) | |||
| LAD | 74 (58.73) | 37 (41.11) | 0.013 |
| LCX | 12 (9.52) | 12 (13.33) | 0.389 |
| RCA | 40 (31.75) | 41 (45.56) | 0.046 |
| Stent length, mean, mm | 25.70 ± 7.14 | 25.26 ± 5.70 | 0.643 |
| Stent diameter, mean, mm | 3.07 ± 0.38 | 3.02 ± 0.42 | 0.314 |
| Tirofiban use, n (%) | 39 (31.00) | 32 (35.56) | 0.229 |
Mean values (standard deviation) and % (n) were reported for continuous and categorical variables, respectively.
CABG, coronary artery bypass grafting; DBP, diastolic blood pressure; fQRS, fragmented QRS; LAD, left anterior descending coronary artery; LCX, left circumflex coronary artery; MI, myocardial infarction; NYHA, New York Heart Association; PCI, percutaneous coronary intervention; RCA, right coronary artery; SBP, systolic blood pressure; TIMI, thrombolysis in myocardial infarction.