Figure 2. Examples of difficult SB wiring in bifurcation lesions due to severe stenoses and unfavourable angulation of the SB origin in relation to the MV.

A and C) LAD/diagonal branch. B) LCx/obtuse marginal. The dotted lines show the theoretical trajectory of the wire. Appropriately preshaped wire tips or any of the techniques described in the text will be needed to wire the MV and SB. LAD: left anterior descending artery; LCx: left circumflex artery; MV: main vessel; SB: side branch