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  • Title: Heart failure on admission and the risk of stroke following acute myocardial infarction: the VALIANT registry.
    Author: Szummer KE, Solomon SD, Velazquez EJ, Kilaru R, McMurray J, Rouleau JL, Mahaffey KW, Maggioni AP, Califf RM, Pfeffer MA, White HD, VALIANT Registry.
    Journal: Eur Heart J; 2005 Oct; 26(20):2114-9. PubMed ID: 15972293.
    Abstract:
    AIMS: We sought to assess the relative contribution of heart failure (HF) on admission for an acute myocardial infarction (MI) to the subsequent in-hospital stroke risk. METHODS AND RESULTS: The VALsartan In Acute myocardial iNfarcTion (VALIANT) registry enrolled 5573 consecutive MI patients at 84 international sites from 1999 to 2001. We calculated odds ratios (ORs) for stroke and adjusted for baseline characteristics, Killip Class, and risk factors for stroke, such as diabetes and prior HF. In-hospital stroke occurred in 81 (1.5%) patients. HF was present on admission in 38% of patients who developed a stroke and in 24% who did not (P=0.001). Older age (OR 1.03 increase/year, 95% confidence interval (CI) 1.01-1.04), Killip Class III (OR 1.66, CI 0.86-3.19) or IV (OR 4.85, CI 1.69-13.93), history of hypertension (OR 1.73, CI 1.06-2.82), and history of stroke (OR 1.89, CI 1.06-3.37) were more common in patients who had in-hospital stroke. In-hospital mortality in patients with and without stroke was 27.2 and 6.5%, respectively (P<0.001). CONCLUSION: Patients with stroke after MI have a dismal prognosis. The presence of HF on admission for an acute MI increases in-hospital stroke risk. HF treatments may modify the risk of stroke.
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