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Query: UMLS:C0020538 (hypertension)
 170,190 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Left ventricular hypertrophy which is the adaptive mechanism of the heart to hypertension may become a cardiovascular risk factor independent of the hypertension which induced it: the regression of left ventricular hypertrophy therefore constitutes one of the medium-term objectives of antihypertensive therapy. Some antihypertensive drugs make the left ventricular hypertrophy regress early and permanently: methyldopa, betablockers, converting enzyme inhibitors, calcium antagonists. The reduction of myocardial mass is slight or debatable with diuretics and absent or inconstant with vasodilator therapy. The regression of left ventricular hypertrophy in hypertension raises several problems: the reliability of methods of measurement; inter-individual and inter-drug variations; the beneficial nature of this regression; the preventive effect of regression of left ventricular hypertrophy on cardiovascular complications. In the light of recent trials, early treatment of hypertension may prevent the development of left ventricular hypertrophy.
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PMID:[Antihypertensive treatment and remission of left ventricular hypertrophy. Critical study]. 215 Apr 73

Left ventricular hypertrophy is a major and independent cardiovascular risk factor in hypertension. The effects of a diuretic, indapamide, on the regression of left ventricular hypertrophy were studied in a group of 9 patients with mild hypertension treated in an open therapeutic trial over a 12 month period. At the end of the trial, the left ventricular mass index decreased significantly from 172 +/- 11 to 147 +/- 11 g/m2 (p less than 0.001). Therefore, in contrast to the other diuretics which have been studied, indapamide seems able to induce regression of the left ventricular hypertrophy complicating hypertension.
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PMID:[Long-term effects of indapamide in left ventricular hypertrophy in patients with hypertension]. 215 Apr 74

This paper briefly presents the situation of high blood pressure in Spain, both its prevalence in different parts of the country and its relevance as a cardiovascular risk factor and its relationship with demographic characteristics and other not removable risk factors. The association high blood pressure/hypercholesterolemia is discussed in greater detail, offering a multifactorial and quantitative approach of risk factors in the prevention of cardiovascular diseases.
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PMID:[Situation and new aspects in arterial hypertension in Spain]. 218 51

Cardiovascular risk factor patterns were examined cross-sectionally in 856 Hispanic and Anglo subjects aged 20-74 years enrolled in the population-based San Luis Valley Diabetes Study of Colorado. Risk factor levels and prevalence were compared for 279 individuals with non-insulin-dependent diabetes mellitus, 89 with impaired glucose tolerance, and 488 with normal glucose tolerance. Sex-specific comparisons of continuous risk factors were made by diabetic status and ethnicity, adjusting for age using two-way analysis of covariance; similar comparisons of discrete variables were made using logistic regression. A number of vascular, metabolic, lipid, obesity-related, family history, and life-style risk factors for cardiovascular disease were examined. In general, biologic risk factors tended to be more strongly associated with diabetic status, while life-style risk factors varied more by ethnicity. Age-adjusted levels of systolic and diastolic blood pressure, hypertension history, triglyceride, and body mass index were lowest among normal subjects, intermediate for those with impaired glucose tolerance, and highest in subjects with non-insulin-dependent diabetes mellitus, while the trend was reversed for high density lipoprotein (HDL) cholesterol and its subfractions. Hispanics had lower serum uric acid levels and greater central obesity than Anglos; they were less likely to have a Type A personality, less physically active at work, and more likely to be a current smoker than Anglos. Hispanic males had a lower body mass index and a higher HDL cholesterol level than Anglo males. These results indicate that an adverse cardiovascular risk factor pattern is present not only in subjects with non-insulin-dependent diabetes mellitus but also in subjects with impaired glucose tolerance who are at increased risk of developing diabetes. This suggests that an adverse risk factor pattern may develop concurrently with or prior to the onset of impaired glucose tolerance. Future prospective studies will help to clarify the temporal sequence involved in the development of adverse cardiovascular risk factor patterns and impaired glucose tolerance.
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PMID:Cardiovascular risk factors and impaired glucose tolerance: the San Luis Valley Diabetes Study. 229 53

There is now considerable evidence that treatment of abnormalities of lipids and lipoproteins reduces the incidence of coronary heart disease (CHD). Treatment of hypertension, another major cardiovascular risk factor, has not been shown to have the same impact on CHD. Possible explanations for this are that cardiovascular risk factors may occur in combination in an individual or that therapy for hypertension has adversely affected one or several of the other risk factors for CHD, thereby offsetting the benefit gained by lowering blood pressure. This article reviews the relationship between lipids, lipoproteins, and coronary heart disease, and the impact of cholesterol lowering on CHD. The evidence that antihypertensive drugs are associated with lipid and lipoprotein abnormalities is introduced by a critical appraisal of the several studies for such evidence. Implications for the treatment of the hypertensive patient are discussed.
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PMID:Lipids, lipoproteins, and coronary heart disease: implications for antihypertensive therapy. 248 4

The hypertensive cardiopathy is a controversial entity as regards the physiopathological mechanisms and clinical aspects. Defined as the hypertrophy of the left ventricle, secondary to the permanent tension increases, it accompanies not only the severe forms of arterial hypertension but also the medium and mild ones. In the authors' opinion, based on numerous experimental and clinical studies, the main factor that initiates the myocardial hypertrophy is the increased parietal tension (hemodynamic hypertrophy). The natural evolution is progressive, the myocardial hypertrophy initially adaptive becomes pathological and the cardiac performance is affected gradually, first in its diastolic and then in its systolic component, up to the final stage of congestive cardiac insufficiency. The structural changes of the myocardial fibre also document the adaptive and pathological hypertrophy, the alteration of the myocardial contractility consisting in the difficulty of transforming the chemical energy into mechanical work. The clinical aspects show an incipient myocardial hypertrophy, considered adaptive, since the cardiac performance is normal; an important hypertrophy affecting the diastolic component and the hypertrophy with dilatation that affects the overall performance. Of the evaluation methods, the echocardiography is the most accurate one in quantifying hypertrophy, evaluation of the cardiac performance and possibility of detecting several characteristic aspects of the hypertensive cardiopathy. The transition moment from the adaptive hypertrophy to the pathological hypertrophy cannot be exactly established but it is documented that the hemodynamic and nonhemodynamic hypertrophy is a supplementary cardiovascular risk factor.
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PMID:[Hypertensive cardiopathy--an adaptive or a pathologic phenomenon?]. 257 41

The incidence of hypertension increases with ageing, and one-third of the elderly population is affected. The role of hypertension as a cardiovascular risk factor has been confirmed in the elderly by the incidence of stroke and myocardial infarction. Effective treatment of hypertension significantly reduces the risk of associated complications: cardiovascular death, congestive heart failure and stroke. There are numerous secondary effects of antihypertensive treatment and the prescription and monitoring of treatment should take into account potential effects specific to elderly patients.
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PMID:Guidelines for treating hypertension in the elderly. 268 95

In addition to the heart, the kidneys, eyes, and brain are the target organs of concern in people with hypertension. This review examines the evidence that damage to these organs can be grouped under the basic heading of hypertensive vasculopathy. The pathogenesis of hypertensive vasculopathy is incompletely understood, but probably involves both mechanical and humoral factors. The sympathoadrenal system and catecholamines have several potentially deleterious effects on large and small blood vessels and may promote thrombotic events. The hypothesis is put forward that norepinephrine is a major contributor to hypertensive vasculopathy and an overlooked cardiovascular risk factor. Choosing the optimal antihypertensive drugs may require considering the impact of the drugs on the sympathoadrenal system.
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PMID:Sympathoadrenal activity, catecholamines, and the pathogenesis of vasculopathic hypertensive target-organ damage. 268 89

Diabetes Mellitus represents an important public health problem in the most developed industrialized countries. Clinical presentations of diabetes are strongly related to the cardiovascular system, namely, coronary disease and angiopathic renal failure. Diabetes modifies the clinical course of arteriosclerosis by carrying the angiopathic process to a microvascular level, where typical microangiopathic lesions can be observed. The risk of developing atherosclerotic disease is 2-3 fold higher in diabetics than in nondiabetics and arterial hypertension reaches a prevalence of 40 to 80%. Authors analyse Arterial Hypertension in the context of Diabetes putting focus on the underlying pathophysiological mechanisms. Where considering the coronary disease (CD), its high prevalence among the diabetics is also emphasized, which is expressed by an increase of morbidity and mortality when compared to normal subjects. In diabetics not only the incidence of Acute Myocardial Infarction is higher, but also the long term prognosis is more complicated, a reality that the authors try to explain by anatomic and metabolic factors. The association of Diabetes plus hyperlipidemia represents undoubtedly one of the major factors that justify the worsening and progression of CD. Briefly, some interesting points that allow the understanding of this topic are described, pointing the pathogenic differences of types I and II and the clinical implications of their knowledge. Finally, the approach of Diabetes as a cardiovascular risk factor is discussed in a prophylactic perspective.
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PMID:[Diabetes mellitus and coronopathy]. 269 90

In elderly and very old patients, arterial hypertension is a major cardiovascular risk factor. However, its management is still controversial. In this review paper, the effects of old age on cardiovascular homeostasis are discussed. Because of less efficient baroreflexes, increased blood pressure variability, postural hypotension, impaired renal and electrolytes regulation, elderly patients are more prone to side effects of treatment. Special attention should be paid to the blood pressure measurements: in this respect, ambulatory non invasive blood pressure profiles can be particularly helpful for the diagnosis and the control of hypertension. A practical approach acknowledging specific aspects of old age and recent advances in antihypertensive therapy is proposed.
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PMID:[Review: arterial hypertension and advanced age]. 271 44


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