Background
Recent studies demonstrated the ineffectiveness of kissing balloon inflation (KBI) in one-stent strategy for the coronary bifurcation lesion (COBIS and Nordic-Baltic III). However, there has not yet been standardization for the KBI technique, and its variety might result in these unexpected results.
Methods
We investigated the final configuration of the main vessel (MV) stent after KBI comparing between minimal and long overlapping. The cross overstenting was performed in the coronary bifurcation models with various angles. In the long overlapping group, the MV stent was dilated by the KBI according to each operator’s decision or under the instruction of placing proximal markers of both balloons at the proximal edge of MV stent. In the minimal overlapping group, the bifurcation was dilated by the KBI with minimal overlapping with the proximal MV dilated by a large balloon. The stent configuration was investigated using microfocus computed tomography.
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