Diastolic dysfunction in arterial hypertension
1Department of Clinical and Experimental Medicine, Federico II University Hospital, School of Medicine, v. S. Pansini 5-80131, Naples, Italy.
Insights
Left ventricular diastolic dysfunction, common in hypertension and diabetes, impairs heart pump function. Managing blood pressure and neurohormonal effects can improve both systolic and diastolic function, especially in heart failure patients.
Area of Science:
- Cardiology
- Cardiovascular Physiology
Background:
- Left ventricular diastolic properties are key indicators of cardiac pump function.
- Myocardial insults can lead to abnormalities in early diastolic relaxation or late diastolic filling.
- These diastolic dysfunctions are often linked to conditions like arterial hypertension, diabetes, and obesity.
Purpose of the Study:
- To examine the impact of myocardial insults on left ventricular diastolic properties.
- To understand the relationship between diastolic dysfunction and conditions such as hypertension.
- To evaluate therapeutic strategies for improving diastolic function in heart failure.
Main Methods:
- Analysis of left ventricular diastolic properties in relation to myocardial structure.
- Assessment of diastolic function in asymptomatic hypertensive patients.
- Review of therapeutic interventions for hypertension and heart failure.
Main Results:
- Prolonged left ventricular relaxation is observed in asymptomatic hypertensive patients, independent of loading conditions.
- This prolonged relaxation is associated with early signs of systolic dysfunction.
- Uncontrolled hypertension, diabetes, and obesity are strongly linked to ischemic heart disease and impaired diastolic function.
Conclusions:
- Antihypertensive therapy can improve systolic and diastolic function by reducing afterload and left ventricular hypertrophy.
- In heart failure patients with preserved ejection fraction, therapy adjustments focusing on reducing myocardial load and neurohormonal activation are crucial.
- Diastolic dysfunction is a significant clinical issue requiring targeted management strategies.
Abstract:
Left ventricular diastolic properties are important markers of pump function and are frequently abnormal when myocardial insults alter tissue structure. Alterations can be limited to the early diastolic phase (early active relaxation) or to late diastolic filling (late ventricular compliance), but more often involve regulation of both phases of diastole. In asymptomatic patients with arterial hypertension, left ventricular relaxation is often prolonged, independently, at least in part, of cardiac loading conditions and left ventricular geometry, but this abnormality is associated with early signs of systolic dysfunction. Uncontrolled hypertension, diabetes, and obesity are most often associated with ischemic heart disease and impaired diastolic function. Reducing blood pressure with antihypertension therapy will reduce myocardial afterload, regress LVH, and improve systolic and diastolic function. In patients with symptoms of CHF with a normal ejection fraction, however, changes in therapy may be indicated. Greater emphasis should be placed on using medications that decrease myocardial load, but also reduce the effects of neurohormonal activation. (c)2001 by Le Jacq Communications, Inc.
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