Fundamentals of percutaneous coronary bifurcation interventions

Table 1 DEFINITION criteria for a complex coronary bifurcation lesion[40]

Major criteria	Complex lesion definition	Minor criteria
For left main bifurcation (Major 1 )	Major 1 or Major 2 + any 2 minor criteria	> Mild calcification
SB lesion length ≥10 mm and SB diameter stenosis ≥ 70%		Multiple lesions
		Bifurcation angle < 45° or > 70°
For non-left main bifurcation (Major 2)		MV-RVD < 2.5 mm
SB lesion length ≥ 10 mm and SB diameter stenosis ≥ 90%		MV lesion length ≥ 25 mm
		Thrombus-containing lesions

All bifurcation lesions are in Medina 1,1,1 or 0,1,1. MV: Main vessel; RVD: Reference vessel diameter; SB: Side branch