Table 3 Procedural characteristics and complications. Number(%) M(P25,P75), mean ± SD
From: Predictors and prognosis of PCI-related myocardial injury in chronic total occlusion
|  | PMI group(n = 42) | Control group (n = 82) | P value |
|---|---|---|---|
Access site |  |  | ＜0.001 |
Radial | 19(38.1) | 75(91.5) | Â |
Femoral | 0 | 1(1.2) | Â |
Radial + femoral | 23(61.9) | 6(7.3) |  |
wire-crossing time ＞30 min | 27(64.3) | 31(37.8) | 0.005 |
Retrograde approach | 16(38.1) | 6(7.3) | ＜0.001 |
Number of stents | 2.00 ± 1.2 | 1.74 ± 0.8 | 0.828 |
Procedure time, min | 91.1 ± 25.4 | 69.4 ± 25.4 | 0.005 |
Contrast volume,mL | 184.3 ± 91.6 | 158.1 ± 53.5 | 0.230 |
Procedure complications | Â | Â | Â |
Coronary artery perforation | 3(7.1) | 1(1.2) | 0.112 |
Coronary artery dissection/haematoma | 5(11.9) | 1(1.2) | 0.017 |
Overall | 8(19.0) | 2(2.4) | 0.003 |