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Aortic valve sclerosis as a marker of active atherosclerosis
Kelley R Branch1, Kevin D O'Brien, Catherine M Otto
1Division of Cardiology, University of Washington Medical Center, 1959 NE Pacific Street, Box 356422, Seattle, WA 98195-6422, USA.
Insights
Aortic sclerosis, a calcific aortic valve disease, significantly increases cardiovascular mortality and myocardial infarction risk by about 50%. This condition shares mechanisms with atherosclerosis, highlighting a link between these cardiovascular diseases.
Area of Science:
- Cardiovascular Medicine
- Valvular Heart Disease
- Atherosclerosis Pathophysiology
Background:
- Aortic sclerosis involves calcific thickening of aortic valve leaflets without significant outflow obstruction.
- Associated risk factors include male sex, smoking, hypertension, hypercholesterolemia, and diabetes.
- Pathophysiological similarities exist between aortic sclerosis and atherosclerosis.
Purpose of the Study:
- To investigate the prognostic significance of aortic sclerosis in cardiovascular outcomes.
- To explore potential shared mechanisms between aortic sclerosis and atherosclerosis.
Main Methods:
- Prospective trial design.
- Analysis of cardiovascular mortality and myocardial infarction incidence.
- Statistical correction for age, gender, coronary artery disease, and other clinical factors.
Main Results:
- Aortic sclerosis presence was associated with a ~50% increase in cardiovascular mortality.
- Aortic sclerosis was also linked to a ~50% increase in myocardial infarction.
- These associations remained significant after adjusting for multiple confounding factors.
Conclusions:
- Aortic sclerosis is an independent predictor of adverse cardiovascular events.
- The findings support the hypothesis of shared pathophysiologic pathways between aortic sclerosis and atherosclerosis.
- Aortic sclerosis warrants clinical attention due to its association with increased cardiovascular mortality and myocardial infarction.
Abstract:
Aortic sclerosis is a calcific disease of the aortic valvular leaflets defined as focal leaflet thickening without significant obstruction to left ventricular outflow. Several clinical factors are associated with calcific aortic valve disease, including male sex, smoking, hypertension, age, hypercholesterolemia, and diabetes. Histologic and biochemical studies suggest similarities between the mechanisms involved in the development of aortic sclerosis and atherosclerosis, suggesting these two diseases may share common pathophysiologic mechanisms. In a recent prospective trial, the presence of aortic sclerosis was associated with an approximately 50% increase in cardiovascular mortality and myocardial infarction, even after correction for age, gender, known coronary artery disease, and clinical factors associated with a aortic sclerosis.