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Cardiovascular structural alterations in hypertension: effect of treatment
E Agabiti-Rosei1, M L Muiesan, D Rizzoni
1Cattedra di Semeiotica e Metodologia Medica, University of Brescia, Italy.
Insights
Antihypertensive drugs can reverse cardiac and vascular structural changes, particularly left ventricular hypertrophy (LVH). Drugs inhibiting the renin-angiotensin system show faster results, potentially reducing cardiovascular risks.
Area of Science:
- Cardiology
- Pharmacology
- Hypertension Research
Background:
- Hypertension causes detrimental cardiac and vascular structural changes.
- Left ventricular hypertrophy (LVH) and arterial remodeling are key consequences.
- Elevated LV mass can impair coronary perfusion.
Purpose of the Study:
- To evaluate the impact of antihypertensive drugs on cardiovascular structural changes.
- To compare the efficacy of different drug classes in reversing LVH and vascular remodeling.
- To assess the clinical significance of structural regression in hypertension management.
Main Methods:
- Review of available data and studies on antihypertensive drug effects.
- Analysis of changes in left ventricular mass and vascular structure (media:lumen ratio).
- Comparison of drug classes, focusing on renin-angiotensin system inhibitors and adrenergic system inhibitors.
Main Results:
- Antihypertensive drugs can induce significant regression of cardiac and vascular structural changes.
- Drugs inhibiting the renin-angiotensin system appear most effective in reducing LVH and vascular remodeling.
- Complete normalization of vascular media:lumen ratio was observed with ACE inhibitors.
Conclusions:
- Antihypertensive therapy can reverse structural changes associated with hypertension.
- Rapid reversal of LVH is crucial for improving coronary perfusion and reducing cardiovascular risk.
- Further research is needed to establish the long-term clinical impact on morbidity and mortality.
Abstract:
Available data support the hypothesis that antihypertensive drugs may determine a significant regression of cardiac and vascular structural changes. Antihypertensive drugs that inhibit the renin-angiotensin or, to a lesser extent, the adrenergic system may more consistently and promptly reduce left ventricular hypertrophy (LVH) and vascular structural changes. It is possible that all antihypertensive agents, when used for long enough periods, will reduce LV mass, whereas only certain drugs will reduce mass within a period of few months, so that any difference among classes of antihypertensive drugs is more quantitative than absolute. However, a rapid reversal of LVH may be particularly important because reducing blood pressure in the presence of an elevated LV mass may be associated with impairment of coronary perfusion. Structural changes of small resistance arteries play a significant role in the genesis of increased vascular resistance in hypertension and in the maintainance of high blood pressure values. Studies in humans have demonstrated that minimal vascular resistance can be reduced with the use of different antihypertensive drugs, while a complete normalization of the media: lumen ratio was observed only with ACE inhibitors. Further studies are needed to assess the true clinical impact, in terms of reduced morbidity and mortality of reversal of cardiovascular structural changes in hypertensive patients. However, available studies indicate that reversal of LVH reduces the pathological consequences of increased left ventricular mass, and preliminary data suggest that complete regression of LVH may be associated to a decreased risk for cardiovascular events.