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Early Intervention in Asymptomatic Aortic Stenosis: What Are We Waiting For?
J Trent Magruder1, Kimberly A Holst2, Jim Stewart3
1Department of Cardiovascular Surgery, Piedmont Heart Institute, Athens, Georgia, USA.
Insights
Aortic stenosis (AS) causes significant heart problems. Early detection of heart damage using new technologies may warrant earlier aortic valve intervention, even before symptoms appear.
Area of Science:
- Cardiology
- Cardiovascular Medicine
- Cardiac Surgery
Background:
- Aortic stenosis (AS) is a major cause of cardiovascular disease and death globally.
- The progression of AS from symptoms to heart failure and death is well-established.
- Current guidelines for aortic valve intervention are primarily based on symptom onset or ventricular decompensation.
Purpose of the Study:
- To explore the potential of early detection of myocardial damage in asymptomatic aortic stenosis.
- To evaluate the evidence supporting early intervention in asymptomatic AS.
- To discuss future treatment paradigms for AS incorporating noninvasive detection of ventricular damage.
Main Methods:
- Review of published randomized trials and ongoing research in aortic stenosis.
- Analysis of advancements in imaging and biomarker technologies for detecting myocardial damage.
- Consideration of competing risks associated with early aortic valve intervention.
Main Results:
- Numerous studies suggest a benefit to early intervention in asymptomatic AS.
- New technologies show promise in detecting myocardial damage before symptom manifestation.
- Evidence increasingly supports earlier intervention for AS.
Conclusions:
- Early detection of myocardial damage may guide timely intervention in AS.
- Future AS management may shift towards intervention before symptoms arise.
- While risks must be considered, earlier intervention in AS appears increasingly justified.
Abstract:
Aortic stenosis (AS) contributes to significant cardiovascular morbidity and mortality worldwide, and the natural history from symptoms to ventricular decompensation, heart failure, and death has been well documented. For more than 2 decades, technologies including imaging and biomarkers have shown a promising ability to detect myocardial damage associated with AS before symptoms arise. Current treatment guidelines rely heavily on symptoms or ventricular decompensation as triggers for aortic valve intervention. There is increasing appreciation of the relationship between myocardial damage due to AS before the emergence of symptoms, and a number of published randomised trials suggest a benefit to early intervention in asymptomatic AS, with additional trials actively enrolling. Future treatment paradigms may incorporate early detection of ventricular damage by noninvasive new technologies as triggers for asymptomatic intervention. Enthusiasm for early aortic valve replacement should be tempered by consideration of the competing risks of early valve intervention, but an increasing preponderance of evidence continues to suggest that earlier intervention in AS is warranted.
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