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  • Title: Comparative effects of percutaneous coronary intervention for infarct-related artery only or for both infarct- and non-infarct-related arteries in patients with ST-elevation myocardial infarction and multi-vessel disease.
    Author: Han YL, Wang B, Wang XZ, Li Y, Wang SL, Jing QM, Wang G, Ma YY, Luan B.
    Journal: Chin Med J (Engl); 2008 Dec 05; 121(23):2384-7. PubMed ID: 19102953.
    Abstract:
    BACKGROUND: Rapid recanalization of infarct-related artery (IRA) has become the major target during primary percutaneous coronary intervention (PCI) for patients with ST-elevation myocardial infarction (MI), but strategy for treatment of non-IRA lesions in this setting remains unclear. This study aimed to compare long-term effects between PCI for IRA only and that for both IRA and non-IRA in ST-elevation MI patients with multi-vessel disease. METHODS: A total of 242 eligible patients with ST-elevation MI and at least two diseased coronary arteries (luminal narrowing > or = 70%) undergoing primary PCI were included. Of them, 149 patients underwent primary PCI for IRA only (group 1), and 93 received primary PCI for IRA followed by elective PCI for non-IRA 7 to 15 days after acute myocardial infarction (AMI) (group 2). Drug-eluting stents (DESs) were deployed in more than 90% of the patients. RESULTS: The two groups did not differ with respect to baseline clinical and angiographic characteristics. No significant differences were observed in 12-month clinical follow-up results regarding major adverse cardiac events (11.5% vs 15.1%, P > 0.05) and target lesion revascularization (8.1% vs 7.6%, P > 0.05) between the two groups. However, patients in group 1 had higher rates of recurrent angina (10.1% vs 2.1%, P < 0.05) and depressed left ventricular ejection fraction evaluated by echocardiography (0.56 +/- 0.22 vs 0.63 +/- 0.25, P < 0.05). CONCLUSION: With the use of DESs, complete revascularization with elective PCI for non-IRA after primary PCI may exert a beneficial effect on long-term symptomatology and left ventricular function in patients with ST-elevation MI and multi-vessel disease.
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