The burden of coronary, cerebrovascular and peripheral arterial disease.

Atherothrombosis is a potentially life-threatening generalised disease process that affects the coronary, cerebral and peripheral vasculature, with clinical manifestations including myocardial infarction, ischaemic stroke and peripheral arterial disease. Atherothrombosis represents a massive clinical and economic burden to healthcare, annually accounting for at least 22% of all deaths globally. Moreover, the prevalence of atherothrombotic disease is increasing as a result of increased longevity resulting in a larger cohort of older individuals. Stroke in particular is a major burden, and is the primary cause of adult disability, the second most important cause of dementia, and the third leading cause of death in industrialised countries. Atherothrombosis is also associated with a poor prognosis, significantly reducing life expectancy in the 60-year-old patient by 8-12 years depending on the vascular event. Moreover, this already shortened life expectancy is further and substantially reduced in patients with more than one atherothrombotic event. The economic burden of atherothrombosis is significant, particularly given its increasing prevalence, with the United States spending over US dollars 300 billion on it. There is thus a need for effective intervention to prevent or reduce mortality and morbidity. Evidence-based medicine using economics, clinical trials data, outcomes research, epidemiology and risk stratification are necessary to target treatment effectively to patients at greatest risk, in an attempt to reduce the burden of atherothrombotic disease.