Differences in the treatment of acute myocardial infarction between regions of countries and the impact on prognosis

Differences in the incidence, prevalence of and mortality from coronary heart disease (CHD) are observed between and within countries. These differences are believed to be related to differing levels of CHD risk factors and medical care. Medical care for acute myocardial infarction has changed significantly in the past decades, with the development of new methods for diagnosis and treatment. Although widely known, these technologies are not consistently applied for reasons of availability and cost, as well as local medical cultures and traditions. The outcomes of medical care for acute myocardial infarction are best measured by case fatality of those hospitalized. Since the early 1960s, case fatality has fallen to less than half that observed previously. This has occurred in the context of widespread use of coronary care unit monitoring, innovative pharmacologic agents and invasive reperfusion treatments. A common debate compares aggressive invasive management with more conservative pharmacologic methods. In this context, studies have produced mixed results with no clear advantage to one approach when both methods are available and effectively applied to appropriately selected patients.