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

Table 2 Maximum-expansion capacity of stents

Manufacturer	Stent type	Stent size (mm)	Balloon1 (bench test) (mm)	Maximum expansion (bench test) (mm)[72]	Maximum expansion (mm) (manufacturer recommendation)
Biosensors	Biomatrix A	3	5	4.1	-
		4	6	5.9	5.8
Medtronic	Resolute Onyx	2.5	4	3.3	-
		3	5	4.4	-
		4	6	5.6	-
		5	6	6	6
Biotronik	Orsiro	3	5	4	-
		4	6	5.3	4.4
Abbott	Xience	3	5	4.1	3.75
		4	6	5.6	5.5
Terumo	Ultimaster	3	5	4.3	-
		4	6	5.8	5.5
Boston Scientific	Synergy	2.75	5	3.6	3.5
		3.5	5	4.2	4.25
		4	6	5.7	5.75

¹In the bench test, all balloons are inflated at 14 atm[72].