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Randomised comparison of provisional side branch stenting versus a two-stent strategy for treatment of true coronary bifurcation lesions involving a large side branch: the Nordic-Baltic Bifurcation Study IV
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  • Published on:
    Final kissing balloon inflation and proximal optimization technique should be performed in true bifurcation lesions with large side branch

    Dear editor,
    I have read with great interest the results of nordic baltic bifurcation study-4 by Kumsar et al (1), in which study clinical outcomes after treatment of lesions in large bifurcations by simple or complex stent implantation were compared. In the 6-month results of this study, compared to the provisional method, a decrease in major adverse cardiac event (MACE) was observed in the complex group, although it was not statistically significant. Again, in the comparison of the 2-year results, no difference was observed between the two groups. The fact that complex stenting is not found to be superior to simple stenting for true bifurcation lesions with such a wide side branch can be due to several reasons:
    1- All patients did not receive a final kissing balloon inflation (FKBI). It is well known that the FKBI should be performed in two-stenting techniques for full treatment of the true bifurcation lesion. In addition, why was the high rate of FKBI application required in simple stenting? It is well known that in simple stenting, POT should be used instead of FKBI unless the there is a TIMI flow <3, and / or a dissection in the side branch (2).
    2- Interestingly, no proximal optimization technique (POT) was used in any patient. In any complex two-stent technique without POT, the lesion is not considered to be truly treated (3,4). I think this is the most important limitation of the study. POT provides optimal positioning of the main vascular ste...

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    Conflict of Interest:
    None declared.