COMPARATIVE STUDY
JOURNAL ARTICLE
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Impact of multivessel coronary disease on one-year clinical outcomes and five-year mortality in patients with ST-elevation myocardial infarction undergoing percutaneous coronary intervention.

BACKGROUND: Multivessel coronary disease (MVD) occurs in approximately 40-65% of patients with ST-segment elevation myocardial infarction (STEMI) treated with percutaneous coronary intervention (PCI), and is associated with significantly increased morbidity and mortality rates.

AIM: To evaluate the impact of MVD on in-hospital and long-term clinical outcomes in patients with STEMI and PCI, and to compare these results with those from a group of patients with a single coronary vessel disease (SVD).

METHODS: Consecutive patients with STEMI treated with PCI were included in the analysis. Patients were divided into two groups: patients with SVD (n = 828, 46.6%) and patients with MVD (n = 948, 53.4%). Clinical follow-up was performed at 12 months, and five-year mortality was assessed. Major adverse cardiac events (MACE) at 12-month follow-up were defined as death (from any cause), stroke, need for percutaneous or any surgical coronary artery revascularisation, and non-fatal myocardial infarction.

RESULTS: The in-hospital mortality was 2.9% vs 9.5% (p < 0.0001) and the five-year mortality was 11.9% vs 23.8% (p < 0.0001), for SVD vs MVD patients, respectively. The cumulative incidence of MACE during 12-month follow-up was significantly higher in patients with MVD (32.5% vs 14.5%, p 〈 0.0001). Moreover, multivariate analysis revealed that after a correction for baseline differences, the presence of MVD was a strong and independent predictor for five-year mortality in patients treated with PCI (hazard ratio 1.45, 95% confidence interval 1.13-1.88, p = 0.004).

CONCLUSIONS: The presence of MVD in patients with STEMI is a strong and independent risk factor for higher long-term mortality.

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