Table 2

Angiographic Findings

VariableAnte Group (n = 23)Retro Group (n = 25)p Value
Preprocedural findings
 Lesion length, mm37.4 ± 18.861.2 ± 22.30.0002
 Occlusion length, mm17.6 ± 8.645.0 ± 26.0<0.0001
 Rentrop's classification >27 (30%)19 (76%)0.002
 Angiographic morphology of CTO segment
  Abrupt morphology of stump3 (13%)11 (44%)0.02
  Side branch arising from stump4 (17%)17 (68%)0.0004
  Angiographic calcification3 (13%)9 (36%)0.07
  Bridging collateral4 (17%)5 (20%)>0.99
Postprocedural findings
 Reference diameter, mm3.24 ± 0.473.16 ± 0.320.78
 Minimum lumen diameter, mm2.61 ± 0.412.55 ± 0.280.79
 Diameter stenosis, %19.5 ± 5.919.0 ± 6.50.57

Values are mean ± SD or n (%).

Abbreviations as in Table 1.