Table 1.
Baseline characteristics of all patients after PCI according to rSS
| Characteristics | rSS = 0 (n = 5375) | 0< rSS ≤S4 (n = 1995) | 4< rSS ≤8 (n = 1406) | rSS >8 (n = 1568) | Statistical values | P (for trend) |
|---|---|---|---|---|---|---|
| Age (years) | 57 ± 10 | 58 ± 10 | 59 ± 10 | 60 ± 10 | 39.21* | <0.01 |
| Male | 4140 (77.0) | 1523 (76.3) | 1095 (77.9) | 1210 (77.2) | 1.13† | 0.77 |
| BMI (kg/m2) | 25.9 ± 3.2 | 26.0 ± 3.2 | 26.0 ± 3.1 | 26.0 ± 3.1 | 0.78* | 0.51 |
| eGFR <90 ml/min | 1871 (34.8) | 767 (38.4) | 599 (42.6) | 708 (45.2) | 70.19† | <0.01 |
| LVEF <40 ml/min | 17 (0.3) | 6 (0.3) | 7 (0.5) | 9 (0.6) | 6.02† | 0.11 |
| Clinical history | ||||||
| Diabetes mellitus | 1398 (26.0) | 709 (35.5) | 447 (31.8) | 554 (35.3) | 93.18† | <0.01 |
| Hypertension | 3321 (61.8) | 1350 (67.7) | 909 (64.7) | 1061 (67.7) | 32.39† | <0.01 |
| Hyperlipidemia | 3545 (66.0) | 1380 (69.2) | 966 (68.7) | 1051 (67.0) | 8.73† | 0.03 |
| Previous stroke | 491 (9.1) | 242 (12.1) | 162 (11.5) | 214 (13.6) | 33.24† | <0.01 |
| Peripheral vascular disease | 121 (2.3) | 53 (2.7) | 39 (2.8) | 57 (3.6) | 9.37† | 0.02 |
| COPD | 114 (2.1) | 44 (2.2) | 39 (2.8) | 39 (2.5) | 2.50† | 0.48 |
| Family history of CAD | 1298 (24.2) | 510 (25.6) | 330 (23.5) | 414 (26.4) | 5.26† | 0.15 |
| Current smoker | 3057 (56.9) | 1143 (57.3) | 797 (56.7) | 891 (56.8) | 0.16† | 0.98 |
| Previous MI | 884 (16.4) | 373 (18.7) | 298 (21.2) | 366 (23.3) | 46.06† | <0.01 |
| Previous PCI | 1203 (22.4) | 503 (25.2) | 386 (27.5) | 424 (27.0) | 25.64† | <0.01 |
| Clinical presentation | ||||||
| ACS | 3334 (62.0) | 1180 (59.1) | 832 (59.2) | 891 (56.8) | 15.27† | <0.01 |
| Stable angina | 1620 (30.1) | 647 (32.4) | 463 (32.9) | 529 (33.7) | ||
| Silent ischemia | 421 (7.8) | 168 (8.4) | 111 (7.9) | 148 (9.4) | ||
| Angiographic and procedural characteristics | ||||||
| CAD extension | ||||||
| LM disease | 131 (2.4) | 48 (2.4) | 41 (2.9) | 36 (2.3) | 1.41† | 0.70 |
| 3-vessel disease | 1228 (22.8) | 1005 (50.4) | 851 (60.5) | 1132 (72.2) | 1659.72† | <0.01 |
| Type of stents | ||||||
| BMS | 27 (0.5) | 12 (0.5) | 5 (0.4) | 13 (0.8) | 3.52† | 0.32 |
| DES | 5198 (96.7) | 1915 (96.0) | 1320 (93.9) | 1338 (85.2) | 311.35† | <0.01 |
| PTCA | 104 (1.9) | 39 (2.0) | 35 (2.5) | 52 (3.3) | 11.79† | 0.01 |
| IVUS use | 302 (5.6) | 110 (5.5) | 80 (5.7) | 88 (5.6) | 0.05† | 1.00 |
| IABP use | 57 (1.1) | 25 (1.3) | 17 (1.2) | 40 (2.6) | 20.81† | <0.01 |
| Procedural success | 5329 (99.1) | 1966 (98.5) | 1360 (96.7) | 1403 (89.5) | 437.96† | <0.01 |
| Baseline SYNTAX score | 9.0 ± 6.5 | 11.6 ± 6.7 | 14.3 ± 6.1 | 21.3 ± 7.2 | 1574.50* | <0.01 |
The data are shown as mean ± SD or n (%). *F value; †Chi-square value. BMI: Body mass index; eGFR: Estimated glomerular filtration rate; LVEF: Left ventricular ejection fraction; COPD: Chronic obstructive pulmonary disease; CAD: Coronary artery disease; MI: Myocardial infarction; PCI: Percutaneous coronary intervention; ACS: Acute coronary syndrome; BMS: Bare metal stent; DES: Drug-eluting stent; PTCA: Percutaneous transluminal coronary angioplasty; IVUS: Intravenous ultrasound; IABP: Intra-aortic balloon pump; rSS: Residual SYNTAX score; SD: Standard deviation; LM: Left main.