METHOD FOR DETERMINING TECHNIQUE FOR SINGLE-STENT STENTING STRATEGY OF BIFURCATED INVOLVEMENT OF LEFT CORONARY ARTERY Russian patent published in 2024 - IPC A61B5/02 

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to cardiovascular and X-ray endovascular surgery. Patient is examined for the Medina type of the bifurcation involvement of the left coronary artery, the bifurcation angle, and the left coronary artery diameter. Derived instrumental data are used to calculate a degree of risk of compromising the orifice of the side branch after stenting of the main branch by formula: p=1/(1+exp^-z)×100%, where p is the probability of compromise in %, z=15.81062+3.048837×Xi₁+2.186262×Xi₂–3.976119×Xi₃. Xi₁="1" in case of "true" type of bifurcation lesion of LCA according to Medina classification or Xi₁="0" in case of "false" type of bifurcation injury of LCA according to Medina classification. Xi₂="1" at the value of the bifurcation angle of the LCA ≤70° or Xi₂="0" at the value of the bifurcation angle of the LCA>70°. Xi₃ is LCA diameter in mm. If the value p>49.3%, a high risk of developing a haemodynamically significant compromise of the orifice of the lateral branch after stenting of the main branch is determined, and stenting is performed with the use of a final kissing-plasty. At value p≤49.3% low risk of developing haemodynamically significant compromise of the orifice of the lateral branch after stenting of the main branch is determined, and stenting is performed without application of final kissing-plasty.

EFFECT: method enables selecting the optimal technique of the single-stent stenting of the bifurcated lesion during the percutaneous coronary intervention.

1 cl, 7 dwg, 4 tbl, 2 ex