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The impact of preventive cardiology on coronary artery disease.

Ischemic heart disease continues to be the leading cause of death among middle-aged people in industrialized countries. However, in North America the rates of death and disability from coronary artery disease (CAD) have declined, mostly because of a reduction of the main modifiable risk factors (high serum cholesterol levels, smoking and hypertension). Intervention trials have consistently shown that the lowering of the severity of risk factors decreases the incidence of CAD. These studies have introduced the goals of preventive cardiology to clinicians but have not provided the necessary knowledge and skills to achieve them. Unfortunately, with the exception of hypertension, the risk factors for CAD are infrequently assessed and managed in ambulatory patients. Incorporation of detection and intervention strategies derived from recent epidemiologic, behavioural and biomedical research into the existing primary health care system may be the most efficient and effective approach to further reducing the impact of CAD. The family physician's office is the ideal location to implement behavioural change strategies. However, primary care intervention to decrease the risk of ischemic heart disease among people at high risk has yet to be studied. In addition, whether the same clinicians who render primary care can assume the responsibility for surveillance and preventive care has to be demonstrated.