Abstract
This study was designed to evaluate ostial left main coronary artery (LMCA) stenosis and investigate concomitant stenotic lesions of LMCA and right coronary arteries (RCA) and their demographic and angiographic features. We evaluated 11,283 patients who underwent coronary angiography. Patients were placed into four groups according to having ostial or nonostial LMCA or RCA stenosis. Significant LMCA stenosis was observed in 242 (8.3%) of the patients, and only 68 (28.1%) of them had significant ostial LMCA stenosis. There was a significant correlation between ostial stenosis of LMCA and RCA (p = 0.03). The frequency of female gender was greater in ostial LMCA and ostial RCA stenosis groups compared with the other groups (p = 0.01). Ostial LMCA and RCA stenosis were related significantly. Both female predominance and coexistence of ostial LMCA and RCA stenosis might have suggest a different pathological ground for this disease.
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