Central illustration. Step-by-step pitfalls, technical troubleshooting and pitfall prevention during the implantation of the first stent using the provisional strategy for the treatment of coronary bifurcation lesions.

An example pitfall is shown in the left panels. The red image borders denote where the pitfall occurred. The blue image border denotes the step commonly performed not suspecting the previous pitfall. The panel on the right with the violet border denotes the corrective step that arises from the pitfall. The panel on the right with the green border denotes how to prevent the pitfall. pMV: proximal main vessel; POT: proximal optimisation technique; SB/aSB: side branch/assigned side branch