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Technique and Patient Selection Criteria of Right Anterior Mini-Thoracotomy for Minimal Access Aortic Valve Replacement
Published on: March 26, 2018
Prevention of aortic valve stenosis: a realistic therapeutic target?
D T Ngo1, A L Sverdlov, J D Horowitz
1University of Adelaide, Basil Hetzel Research Institute, Department of Cardiology, The Queen Elizabeth Hospital, Australia.
Insights
Aortic valve stenosis (AS) treatment options are limited, but new pharmacotherapies may slow disease progression. Research suggests ACE inhibitors, ARBs, and osteoporosis drugs show promise for managing AS.
Area of Science:
- Cardiology
- Pharmacology
- Biomedical Engineering
Background:
- Aortic valve stenosis (AS) is the most prevalent valvular heart disease in Western populations, particularly affecting individuals over 80.
- Current treatment for AS is limited to valve replacement, despite early stages being linked to increased coronary event risk.
Purpose of the Study:
- To review emerging pharmacotherapeutic options for aortic valve stenosis (AS).
- To explore potential treatments that could slow the progression of AS and reduce associated risks.
Main Methods:
- Review of recent studies in animal models and retrospective human evaluations.
- Analysis of emerging therapeutic agents, including their potential impact on AS pathophysiology.
Main Results:
- Lipid-reducing therapies have not demonstrated efficacy in slowing AS progression.
- Angiotensin-converting enzyme (ACE) inhibitors and/or angiotensin receptor blockers (ARBs) show potential in preclinical and retrospective human studies.
- Osteoporosis medications are also being investigated for their promise in retarding AS progression.
Conclusions:
- Pharmacological interventions targeting AS pathophysiology, such as ACE inhibitors, ARBs, and osteoporosis drugs, offer potential for disease modification.
- Expedited development of these novel therapeutic strategies is crucial given the significant morbidity, mortality, and healthcare costs associated with AS.
Abstract:
Aortic valve stenosis (AS) is the most common form of valvular heart disease in the Western world, affecting ~40% of the population over the age of 80; to date the only established treatment is valve replacement. However, AS progression occurs over many years, and is associated from its earliest stages with increased risk of coronary events. Recent insight into the pathophysiology of AS has included central roles for angiotensin II, for diminished nitric oxide effect at the level of valve endothelium and matrix, and for inflammatory activation/redox stress culminating in activation of pro-calcific stimuli. Despite the presence of atheroma within the stenotic valve, hyperlipidemia per se does not play a critic role in the development of obstructive disease. We review emerging options for pharmacotherapy of AS, including in particular retardation of disease progression. The various clinical evaluations of lipid-reducing therapy have been uniformly unsuccessful in slowing AS progression. However, recent studies in animal models and retrospective evaluations in humans suggest that ACE inhibitors and/or angiotensin receptor blockers may be effective in this regard. Furthermore, agents normally utilized to treat osteoporosis also offer promise in retarding AS. Given the considerable morbidity, mortality and health care costs associated with AS, such therapeutic developments should be expedited.
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