Technical feasibility, safety, and clinical outcome of stenting of unprotected left main coronary artery bifurcation narrowing

Seung Jung Park, Cheol Whan Lee, Young Hak Kim, Jae Hwan Lee, Myeong Ki Hong, Jae Joong Kim, Seong Wook Park

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2 Citations (Scopus)


This study was performed to evaluate the acute and long-term results of stenting for unprotected left main coronary artery (LMCA) bifurcation lesions. Sixty-three consecutive patients with an unprotected LMCA bifurcation lesion and normal left ventricular function were included. Stenting was performed with (n = 32) or without debulking atherectomy (n = 31) at the operator's discretion. Slotted-tube stents, coil stents, or bifurcation stents were used. The procedural success rate was 100%. In-hospital events including stent thrombosis, Q-wave myocardial infarction, and emergency bypass surgery did not occur in any patients. The angiographic follow-up rate was 86% (43 of the 50 eligible patients), and the restenosis rate was 28% (parent vessel only 14%, side branch only 9%, and both 5%). Restenosis at the parent vessel occurred less frequently in the debulking group than in the nondebulking group (5% vs 33%, respectively, p = 0.02). In multivariate analysis, the debulking procedure was an independent predictive factor of restenosis for the parent vessel (odds ratio 0.10, 95% confidence intervals 0.01 to 0.91, p = 0.04). Clinical follow-up was obtained in all patients at 19.9 ± 13.7 months. There were 2 deaths (noncardiac origin), but no myocardial infarction during follow-up. Target lesion revascularization was required in 6 patients. The event-free survival rate (death, nonfatal myocardial infarction, and repeat revascularization) was 86% at the end of the follow-up period. In conclusion, stenting for an unprotected LMCA bifurcation lesion may be performed with a high procedural success rate and a favorable clinical outcome in selected patients with normal left ventricular function, suggesting that stenting would be an effective alternative to surgery in these patients.

Original languageEnglish
Pages (from-to)374-378
Number of pages5
JournalAmerican Journal of Cardiology
Issue number4
Publication statusPublished - 2002 Aug 15

All Science Journal Classification (ASJC) codes

  • Cardiology and Cardiovascular Medicine


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