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PubMed1996

Role of the renin-angiotensin system as a risk factor for control of morbidity and mortality in coronary artery disease.

Coronary heart disease is a multifactorial disease, influenced by environmental and genetic factors. Experimental and clinical data show that the renin-angiotensin system has important indications in coronary artery disease by influencing progressive ventricular dilatation, ventricular function, and outcome. Angiotensin II may have direct toxic effects on myocardial cells, induce hypertrophy in noninfarcted areas, activate the sympathetic nervous system, stimulate fibroblast proliferation, vasoconstrict coronary vessels, increase left ventricular afterload, and impair diastolic relaxation. Associations between a polymorphism of the angiotensinogen gene and angiotensin-converting enzyme gene and the occurrence of myocardial infarction have been reported. Patients with the DD genotype (ACE gene) have higher plasma ACE and myocardial ACE activity. Preliminary data suggest that the DD genotype is associated with more progressive ventricular dilatation post myocardial infarction and with a greater response after ACE inhibition. The DD genotype is also associated with a higher incidence of left ventricular hypertrophy, which may have implications for the induction of hypertrophy in noninfarcted areas. Whatever the mechanisms, chronic ACE inhibition, started early after myocardial infarction, improves survival and reduces mortality and morbidity for major cardiovascular events.

Angiotensin II↗

PubMed2000

Diagnostic and prognostic value of myocardial perfusion imaging in patients with known or suspected stable coronary artery disease.

Coronary artery disease is the leading cause of complications and death in the United States and other Western countries, and stress myocardial perfusion study is an important component of the clinical evaluation, stratification, and management. This imaging technique is a well-established modality and has been widely used for the past three decades. New quantitative techniques for the assessment of ventricular function using quantitative gated single-photon emission computed tomography in addition to myocardial perfusion will potentially enhance the role of nuclear cardiology in the management of these patients. This review summarizes the current knowledge of the diagnostic and prognostic uses of stress myocardial perfusion imaging using exercise and pharmacological stress in patients with stable coronary artery disease.

Adult↗

PubMed1994

Coronary arteriographic findings in black patients and risk markers for coronary artery disease.

Coronary arteriographic results are reported in 1535 black patients: 751 men (mean age 57 +/- 11) and 784 women (mean age 59 +/- 11). Among the black men 19%, 15%, 21%, and 4% had single-, double-, and triple-vessel and left main disease, respectively. Among the black women there were 12%, 10%, 15%, and 3% with similar involvement. Logistic regression models showed that most of the recognized risk factors were positively correlated with significant (at least one artery with > or = 50% stenosis) coronary disease, but a history of hypertension was not a significant independent predictor in either sex. ECG evidence of previous infarction increased the odds of detecting significant coronary disease by the greatest amount when controlling for other significant risk markers in women. In men both previous infarction and atypical pain (negative) were equally important. This study confirms but does not explain previous reports that have revealed less than expected angiographic evidence of significant coronary artery disease in black compared with white persons.

Analysis of Variance↗

PubMed1963

[Nutrition, cholesterol, physical activity and coronary disease].

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Cholesterol↗

PubMed2001

Cardiac risk factors, medication, and recurrent clinical events after acute coronary disease; a prospective cohort study.

AIMS: Systematic data are sparse on clinical outcome after acute coronary disease followed by cardiac rehabilitation therapy. Therefore, our objective was to determine the long-term development of cardiac risk factors, recurrent clinical events, and cardiac medication in patients undergoing routine in hospital cardiac rehabilitation therapy. METHODS AND RESULTS: In the prospective PIN Study (Post Infarct Care), 2441 consecutive patients (78% men, 60+/-10 years, 22% women, 65+/-10 years) were enrolled in 18 inpatient rehabilitation centres in Germany following myocardial infarction (56%), coronary artery bypass graft (38%) or percutaneous transluminal coronary angioplasty (6%). Cardiac risk factors, pre-specified clinical end-points, and the prescription of cardiac medication were prospectively documented on admission to and at discharge from rehabilitation therapy, and 3, 6 and 12 months later by obtaining information with standardized questionnaires from the patients and their physicians. The cardiac risk factors improved initially during cardiac rehabilitation therapy, but deteriorated within the following 12 months: 39% patients smoked at the beginning vs 5% at the end of in hospital rehabilitation vs 10% at 12 months follow-up (P<0.001). The respective numbers for patients with blood pressure >140 and/or 90 mmHg were 24 vs 8 vs 25% (P<0.01) and with plasma cholesterol >200 mg. dl(-1)57 vs 29 vs 51% (P<0.01). A total of 886 patients experienced one or more recurrent clinical events during the first year, 69% of those within the initial 6 months. At 12 months follow-up, 77% of patients received aspirin, 70% beta-blockers, 62% lipid lowering medication, and 53% angiotensin converting enzyme inhibitors. CONCLUSION: The present results indicate that the benefit of cardiac rehabilitation therapy following acute coronary events is only partially maintained during the following year. Continuous strategies of medical care need to be developed to improve the long-term outcome in coronary patients.

Aged↗

PubMed1999

[Type 2 diabetes mellitus and coronary heart disease].

Coronary artery disease is the most common cause of morbidity and mortality in subjects with type 2 diabetes mellitus. The risk of coronary artery disease, myocardial infarction and mortality from myocardial infarction is markedly increased in type 2 diabetic patients compared with non-diabetics. Diabetic patients with acute myocardial infarction should receive thrombolytic therapy as rapidly as possible and for the same indications as non-diabetics. Diabetic retinopathy is not a contraindication to treatment. The management of diabetic patients should also include medication with aspirin, beta-blockers and ACE-inhibitors. An insulin-glucose infusion during acute myocardial infarction, followed by insulin injections subcutaneously, reduces mortality by about 30% after 12 months and improves long-term prognosis. Thus, insulin-glucose infusion in diabetic patients with acute myocardial infarction, especially in those with a high blood glucose level (> 11 mmol/l), seems advisable. Diabetic patients benefit from secondary prevention by drug therapy (aspirin, lipid lowering with statins, beta-blockers and ACE-inhibitors) to the same extent as, or more than, non-diabetic patients.

Cause of Death↗

PubMed2001