Table 4.
Success (N = 143) |
Failure (N = 67) |
|||||
---|---|---|---|---|---|---|
N | % | N | % | P value | ||
CTO stump | Blunt | 110 | 67.9 | 52 | 32.1 | 0.912 |
Tapering | 33 | 68.8 | 15 | 31.3 | ||
Site of CTO | Ostial | 17 | 65.4 | 9 | 34.6 | 0.010 |
Proximal | 45 | 55.6 | 36 | 44.4 | ||
Mid | 60 | 77.9 | 17 | 22.1 | ||
Distal | 21 | 80.8 | 5 | 19.2 | ||
Calcification | No | 75 | 72.1 | 29 | 27.9 | 0.005 |
Mild | 32 | 84.2 | 6 | 15.8 | ||
Moderate | 24 | 55.8 | 19 | 44.2 | ||
Severe | 12 | 48 | 13 | 52 | ||
Length of CTO | 0.0001 | |||||
<10 | 56 | 98.2 | 3 | 1.8 | ||
10–20 | 58 | 65.2 | 31 | 34.8 | ||
>20 | 29 | 46.8 | 33 | 53.2 | ||
Collaterals | Absent | 3 | 60 | 2 | 40 | 0.0001 |
Bridging | 50 | 51 | 48 | 49 | ||
Hetro | 22 | 81.5 | 5 | 18.5 | ||
Homo | 68 | 85 | 12 | 15 | ||
Distal reformation | 0.003 | |||||
Poor | 59 | 56.3 | 44 | 43.8 | ||
Good | 84 | 78.5 | 23 | 21.5 |