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  • Title: Cardiovascular outcomes in patients with peripheral arterial disease as an initial or subsequent manifestation of atherosclerotic disease: Results from a Swedish nationwide study.
    Author: Sigvant B, Hasvold P, Kragsterman B, Falkenberg M, Johansson S, Thuresson M, Nordanstig J.
    Journal: J Vasc Surg; 2017 Aug; 66(2):507-514.e1. PubMed ID: 28433332.
    Abstract:
    OBJECTIVE: Long-term progression of peripheral arterial disease (PAD) as initial manifestation of atherosclerotic arterial disease is not well described. Cardiovascular (CV) risk was examined in different PAD populations diagnosed in a hospital setting in Sweden. METHODS: Data for this retrospective cohort study were retrieved by linking data on morbidity, medication use, and mortality from Swedish national registries. Primary CV outcome was a composite of myocardial infarction, ischemic stroke (IS), and CV death. Kaplan-Meier analysis and Cox proportional hazards modeling was used for describing risk and relative risk. RESULTS: Of 66,189 patients with an incident PAD diagnosis (2006-2013), 40,136 had primary PAD, 16,786 had PAD + coronary heart disease (CHD), 5803 had PAD + IS, and 3464 had PAD + IS + CHD. One-year cumulative incidence rates of major CV events for the groups were 12%, 21%, 29%, and 34%, respectively. Corresponding numbers for 1-year all-cause death were 16%, 22%, 33%, and 35%. Compared with the primary PAD population, the relative risk increase for CV events was highest in patients with PAD + IS + CHD (hazard ratio [HR], 2.01), followed by PAD + IS (HR, 1.87) and PAD + CHD (HR, 1.42). Despite being younger, the primary PAD population was less intensively treated with secondary preventive drug therapy. CONCLUSIONS: PAD as initial manifestation of atherosclerotic disease diagnosed in a hospital-based setting conferred a high risk: one in eight patients experienced a major CV event and one in six patients died within 1 year. Despite younger age and substantial risk of future major CV events, patients with primary PAD received less intensive secondary preventive drug therapy.
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