The study included 322 patients with bifurcation lesion of the coronary bed who had angioplasty by the conventional procedure by employing one balloon. The authors analyze whether there is a correlation of balloon coronary angiographic findings with the following X-ray morphological characteristics: the origin of a lateral branch from the stenotic segment of the coronary artery, that of the branch at a distance of no more than 10 mm proximal or distal to stenosis, the angle of branch origin. Based on the findings, it was concluded that the origin of the branch from the stenotic segment is a factor that limits an angiographic success of dilatation of the great coronary vessel. The origin of the branch 10 mm proximal or distal to stenosis does not affect the angiographic success of the procedure. The risk factors of lateral branch lesion include the origin of the branch from a stenotic segment, an angle of branch origin of over 45 degrees.
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