Key result
The incidence of left main coronary artery stenosis was 3.3% between 1996 and 1999, significantly higher than the previous 15 years (p<0.01), with CABG performed in 63% and stenting in 14%.
Observational (n=224)
No
p-value: p=<0.01
The incidence of left main coronary artery stenosis increased significantly between 1996 and 1999, with CABG remaining the standard treatment but PCI emerging as an option in selected patients.
May signal rising left main stenosis burden; leaves open whether trend persists or alters current revascularization choices.
Background:A stenosis of the left main coronary artery has critical prognostic importance. Recent reports on successful left main stenting are now challenging traditional treatment patterns for this lesion. We evaluated the recent four-year trends in incidence, clinical, angiographic findings and treatment modalities in patients with left main coronary artery stenosis (LMS). Methods:Patients who were diagnosed as a significant LMS at Yonsei cardiovascular hospital between 1996 and 1999 were analyzed retrospectively. Results:The incidence of LMS during the period of 1996 to 1999 was 3.3% (n=224) and it was significantly higher than that of the previous 15 years previous before to 1996 (p<0.01). The incidence of isolated ostial lesion was 0.28% and this lesion was more prevalent in young female patients with less risk factors as compared with other types of LMS (p<0.01). After exclusion of the patients with an isolated ostial lesion, patients were grouped according to the lesion site:ostium, shaft, and shaft lesion extended to distal vessels. There were no significant differences in clinical and hemodynamic findings among these groups. Coronary artery bypass graft was performed in 141 patients (63%) and stent implantation in 16 patients (14%). Conclusion:The incidence of LMS has been increased. There was no difference in the clinical and hemodynamic findings according to the types of LMS. Surgery is still a standard treatment, but however, in selected patients percutaneous coronary intervention can be another treatment option. (Korean Circulation J 2001;31(2):153-158)
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Koo et al. (2001) conducted an observational in Left main coronary artery stenosis (n=224). Left main coronary artery stenosis vs. Previous 15 years was evaluated on Incidence of left main coronary artery stenosis (p=<0.01). The incidence of left main coronary artery stenosis was 3.3% between 1996 and 1999, significantly higher than the previous 15 years (p<0.01), with CABG performed in 63% and stenting in 14%.
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