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1 - Stroke: background, epidemiology, etiology and avoiding recurrence

Published online by Cambridge University Press:  05 August 2016

Gabriel R. de Freitas
Affiliation:
Rua Mario Pedermeiras 55 206-I, Rio de Janeiro, RJ, CEP, 2261-060, Brazil
Daniel C. Bezerra
Affiliation:
Department of Neurology, Centre Hospitalier Universitaire Vaudois
Alexandre B. Maulaz
Affiliation:
Department of Neurology, Centre Hospitalier Universitaire Vaudois
Julien Bogousslavsky
Affiliation:
Division de Neuropsychologie, Centre Hospitalier Universitaire Vaudois
Michael P. Barnes
Affiliation:
University of Newcastle upon Tyne
Bruce H. Dobkin
Affiliation:
University of California, Los Angeles
Julien Bogousslavsky
Affiliation:
Université de Lausanne, Switzerland
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Summary

Epidemiology

The impact of stroke

In both the developing and developed countries, the burden of stroke is enormous. Stroke was responsible for 1 in every 15 deaths in the USA in 2001 and, on average, every three minutes someone dies from a stroke (American Heart Association, 2004). Stroke is the second leading cause of death worldwide and the third in developed countries (Murray and Lopez, 1997; Sarti et al., 2000). In 2002, there were more than 5.47 million deaths from cerebrovascular disease worldwide (World Health Organization [WHO], 2003a).

However, stroke is more disabling than lethal, with at least 30% of the survivors making a incomplete recovery and a further 20% requiring assistance for activities of daily living (Bonita et al., 1997). Cerebrovascular diseases are the first cause of serious long-term disability in the USA (American Heart Association, 2004) and the second worldwide in individuals more than 60 years of age (WHO, 2003a). In addition, the psychosocial burden of caregiving should be mentioned. The long-term caregivers of people with stroke more frequently complain of restraints in social life, uncertainty about care needs, constant worries, and feelings of heavy responsibility. A lower quality of life, as well as an increased prevalence of depression, was also found among stroke caregivers (Morimoto et al., 2003).

Finally, because stroke is a leading cause of lost years and disability, it has a very high economic cost. Although the cost may vary according to the type (Bergman et al., 1995; Taylor et al., 1996; Payne et al., 2002) (e.g. hemorrhagic vs. ischemic) and severity of stroke (Caro et al., 2000), the mean lifetime cost for ischemic stroke (IS) including inpatient care, rehabilitation and follow-up is expected to be at US$ 140, 048, and the estimated direct and indirect cost of stroke in the USA for 2004 is US$ 53.6 billion (Taylor et al., 1996; American Heart Association, 2004).

Secular trends in stroke mortality

The mortality from stroke has been clearly changing over time. In the USA, it is estimated that between 1915 and 1968 strokemortality has decreased approximately 1.5% per year, probably as a result of improvements in general public health and nutritional status of the citizens (Wolf and D'Agostino, 1998).

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Publisher: Cambridge University Press
Print publication year: 2005

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