Research Article
Predictors for New Native-Vessel Occlusion in Patients with Prior Coronary Bypass Surgery: A Single-Center Retrospective Research
Table 2
Procedural and angiographic characteristics of patients with or without a new CTO.
| | Variables | No new CTO (n = 228) | New CTO (n = 126) | value |
| | Preoperative angiogram | | | | | Vessel stenosis at baseline | | | 0.001 | | Moderate (40%–69%) | | | | | LAD | 18 (7.89%) | 7 (5.56%) | | | LCX | 18 (7.89%) | 6 (4.76%) | | | RCA | 22 (9.65%) | 9 (7.14%) | | | Severe (≥70%) | | | | | LAD | 174 (76.32%) | 114 (90.48%) | | | LCX | 123 (53.95%) | 89 (70.63%) | | | RCA | 132 (57.89%) | 98 (77.78%) | | | Coronary lesion category | | | 0.775 | | Single-vessel disease | 18 (7.89%) | 8 (6.35%) | | | Double-vessel disease | 62 (27.19%) | 31 (24.60%) | | | Triple-vessel disease | 116 (64.47%) | 87 (69.05%) | | | Left main involvement | 102 (44.74%) | 48 (38.10%) | 0.508 | | Total no. of patients with ≥1 CTO | 83 (36.40%) | 44 (34.92%) | 0.416 | | Total of CTO vessel | | | 0.984 | | LAD | 23 (10.09%) | 15 (11.91%) | | | LCX | 15 (6.58%) | 7 (5.56%) | | | RCA | 35 (15.35%) | 18 (14.29%) | | | Multivessel | 8 (3.51%) | 3 (2.38%) | | | Mean no. of bypass grafts | 3.0 ± 0.63 | 3.06 ± 0.75 | 0.599 | | Types of graft | | | 0.460 | | Internal mammary artery | 183 (80.26%) | 107 (84.92%) | | | Saphenous vein | 2.22 ± 0.64 | 2.25 ± 0.73 | | | Graft patency | | | 0.522 | | LIMA | 190 (83.33%) | 109 (86. 51%) | | | SVG-D | 195 (85.53%) | 96 (76.19%) | | | SVG-LCX/OM | 185 (81.14%) | 93 (73.81%) | | | SVG-RCA/PDA | 163 (71.49%) | 84 (66.67%) | | | Postoperative medication | | | 0.902 | | Aspirin | 215 (94.30%) | 118 (93.65%) | | | Statin | 185 (81.14%) | 98 (77.78%) | | | Follow-up time (Mths) | 32.65 ± 15.84 | 37.52 ± 17.39 | 0.175 | | Free of symptom | 123 (53.94%) | 56 (44.44%) | 0.087 | | Incomplete revascularization | 112 (49.12%) | 70 (55.56%) | 0.125 |
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