OCCLUSION OF THE LEFT MAIN CORONARY-ARTER Y

Atherosclerosis-induced occlusion of the left coronary artery (LCA) is a rare findings registered angiographycally. It is associated with a high risk of a fatal outcome. Eight cases of LCA occlusion are reporte d. A profound ST depression was shown by all ECG variants: bicycle exe rcise, Holter monitoring, 12-lead registration during angina attack. T he conus branch gave collaterals to anterior descending artery in all the cases. Seven cases were treated surgically, one patient rejected o peration and was alive at 3.5-year follow-up examination. Etiology and therapeutic policy in occlusion of the LCA are discussed.