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PubMed1978

Behavioural prevention of ischemic heart disease.

Heart disease continues to be a major cause of disablement and death in Canada. Elevated serum cholesterol concentrations, hypertension and cigarette smoking are among the standard risk factors associated with ischemic heart disease. Research attention has also been directed at the role of behavioural factors in the development of atherosclerosis and myocardial infarction. Experimental findings support a conceptual approach to the interplay of psychologic stress, the type A "coronary"-prone behaviour pattern and pathophysiologic mechanisms that have been implicated in the development of coronary artery disease. It is concluded that type A behaviour and stress contribute substantially to the pathogenesis of cardiovascular disease. However, assessment of the manner in which these two variables influence the pathophysiology of ischemic heart disease requires further research, with systematic examination of physiologic and biochemical processes. Potential strategies for modifying type A behaviour are reviewed. However, unequivocal support for the preventive efficacy of behavioural approaches must await future research.

Behavior↗
PubMed1987

[Coronary heart disease and heart valve diseases in patients with terminal kidney insufficiency].

Cardiac catheterisation and coronary angiography were performed in 100 patients preceding a planned renal transplantation. Coronary heart disease was revealed in 64 patients: stenoses of 50-70% in 28, 71-90% in 16, over 90% in 20 patients. For stenoses above 50% the sensitivity of clinical symptoms was 0.52, their specificity 0.64. For stenoses over 70% the specificity was 0.58; over 90% it was 0.70. Typical symptoms of angina were less common in dialysis patients with coronary heart disease than is usual in other patients with coronary heart disease. Total duration of dialysis as well as frequency and severity of coronary heart disease did not correlate. In 19 of the 100 patients valvar disease was also present, with a discrepancy between the severity of clinical and of hemodynamic findings. Incidence and severity of valvar disease increased with the duration of dialysis. Transplantation was postponed in 11 patients (bypass operation in 3, balloon dilatation in 2, valve replacement in 6). Transplantation was advised against in four (severe coronary heart disease in 2, cardiomyopathy in 2).

Adult↗
PubMed2002

Gene and cell therapy for heart disease.

Heart disease is the most common cause of morbidity and mortality in Western society and the incidence is projected to increase significantly over the next few decades as our population ages. Heart failure occurs when the heart is unable to pump blood at a rate to commensurate with tissue metabolic requirements and represents the end stage of a variety of pathological conditions. Causes of heart failure include ischemia, hypertension, coronary artery disease, and idiopathic dilated cardiomyopathy. Hypertension and ischemia both cause infarction with loss of function and a consequent contractile deficit that promotes ventricular remodeling. Remodeling results in dramatic alterations in the size, shape, and composition of the walls and chambers of the heart and can have both positive and negative effects on function. In 30-40% of patients with heart failure, left ventricular systolic function is relatively unaffected while diastolic dysfunction predominates. Recent progress in our understanding of the molecular and cellular bases of heart disease has provided new therapeutic targets and led to novel approaches including the delivery of proteins, genes, and cells to replace defective or deficient components and restore function to the diseased heart. This review focuses on three such strategies that are currently under development: (a) gene transfer to modulate contractility, (b) therapeutic angiogenesis for the treatment of ischemia, and (c) embryonic and adult stem cell transfer to replace damaged myocardium.

Animals↗
PubMed1997

An epidemiologic perspective of systemic hypertension, ischemic heart disease, and heart failure.

Improvements in the identification and control of hypertension have helped define populations at risk for hypertension and delineated the role of hypertension as a risk factor in ischemic heart disease and heart failure. Epidemiologic data document the high prevalence of hypertension among the elderly and black populations. Beginning in the 1970s, a new perspective on the identification and treatment of hypertension began to emerge with greater emphasis on blood pressure control, particularly among these high-risk groups. By the early 1990s, most hypertensive individuals were being treated and blood pressure was under control in 55% of hypertensive persons overall. Although the importance of elevated diastolic pressure has traditionally been emphasized, in recent years the clinical implications of isolated systolic hypertension and the benefit of treating elevated systolic pressure have been recognized. Coronary heart disease is associated with definite hypertension (> or =160/95); however, the presence of other risk factors such as elevated plasma levels of cholesterol and high-density lipoprotein cholesterol, cigarette smoking, and diabetes mellitus create a synergy with even mild hypertension (140-159/90-94 mm Hg) to increase coronary risk. A different situation is present for cardiac failure. Data from the Framingham Heart Study demonstrate that hypertension, myocardial infarction, angina pectoris, diabetes mellitus, left ventricular hypertrophy, and valvular heart disease were associated with an increased relative risk for cardiac failure. The relative risk for cardiac failure was greatest for persons with a previous myocardial infarction, and hypertension and previously diagnosed coronary heart disease were important precursors of cardiac failure.

Female↗
PubMed1998

The burden of physical inactivity & cardiovascular heart disease.

Heart disease exacts a tremendous toll each year in mortality and health care expenditures. Although physical activity reduces the risk of heart disease, the population remains inactive. The importance of physical activity in risk and health care cost reduction is discussed.

Exercise↗
PubMedDate not supplied

Scleroderma heart disease.

Heart disease is a frequent and often severe feature of systemic sclerosis (scleroderma). Cardiomyopathy, with ventricular diastolic dysfunction and arrhythmias, is the most important form, since it is associated with a very poor prognosis. The current challenge is to define its pattern and identify individuals at risk, but evaluation in vivo may be hard to perform. The aim of this review is to provide an update on the clinical aspects of scleroderma heart disease and the early pivotal role that coronary microcirculation dysfunction plays in its development. A discussion of the diagnostic tools now available for this frequently asymptomatic condition will be provided. Treatment options will be reviewed, even though no cure for systemic sclerosis exists, and the current therapy of diastolic dysfunction remains unsatisfactory.

Animals↗
PubMed2000

[Combined operation for ischemic heart diseases and valvular heart diseases].

We performed combined operation for patients who have both ischemic heart disease and valvular heart disease in 21 cases from January 1991 to October 1999. This operation was 3.1% of 682 cases of coronary artery bypass grafting and 5.0% of 416 cases of operation for valvular heart disease during that period. The mean age of these patients was 67.9 +/- 9.1 years. The average number of grafts in the coronary artery bypass grafting was 1.5 +/- 0.6. Aortic valve replacement was performed in 6 cases, mitral valve replacement in 10 cases and mitral valve plasty in 5 cases. Together with this combined operation, ascending aorta and aortic arch replacement was done in 1 case and abdominal aortic replacement in 2 cases. Three patients died due to postoperative aortic rupture, cerebral infarction or excessive surgical intervention in ascending aorta and aortic arch replacement. Combined operation for ischemic heart diseases and valvular heart diseases can safely performed, but it appears necessary to pay attention to arteriosclerotic lesions.

Aged↗