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  • Title: 5-year prognostic value of no-reflow phenomenon after percutaneous coronary intervention in patients with acute myocardial infarction.
    Author: Ndrepepa G, Tiroch K, Fusaro M, Keta D, Seyfarth M, Byrne RA, Pache J, Alger P, Mehilli J, Schömig A, Kastrati A.
    Journal: J Am Coll Cardiol; 2010 May 25; 55(21):2383-9. PubMed ID: 20488311.
    Abstract:
    OBJECTIVES: The objective of this study was to investigate the impact of no-reflow phenomenon on 5-year mortality among patients with acute ST-segment elevation myocardial infarction (STEMI) treated by primary percutaneous coronary intervention (PCI). This impact was also assessed in relation to infarct size. BACKGROUND: The impact of no-reflow on long-term mortality in patients with STEMI has been insufficiently studied. METHODS: This study included 1,406 patients with STEMI treated by primary PCI. No-reflow was diagnosed using angiographic criteria. Infarct size was measured with single-photon emission computed tomography imaging 7 to 14 days after the acute event. The primary outcome was 5-year mortality. RESULTS: The no-reflow phenomenon was diagnosed in 410 patients (29%). Infarct size was 15.0% (6.0% to 29.0%) of the left ventricle in the no-reflow group versus 8.0% (2.0% to 21.0%) of the left ventricle in the reflow group (p < 0.001). There were 132 deaths during follow-up. Of them, 59 deaths occurred among patients with no-reflow and 73 deaths occurred among patients with reflow (Kaplan-Meier estimates of 5-year mortality 18.2% and 9.5%, respectively; odds ratio: 2.02; 95% confidence interval: 1.44 to 2.82; p < 0.001). The Cox proportional hazards model adjusting for infarct size among other variables identified the no-reflow phenomenon as an independent correlate of 5-year mortality (hazard ratio: 1.66; 95% confidence interval: 1.17 to 2.36; p = 0.004). CONCLUSIONS: In patients with STEMI treated by primary PCI, no-reflow phenomenon is a strong predictor of 5-year mortality. No-reflow phenomenon after PCI provides prognostic information that is independent of and beyond that provided by infarct size.
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