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[Heart rate: mechanical risk]
1Hôpital Saint-André, Bordeaux.
Insights
Mechanical forces influence atherosclerosis plaque development. While heart rate plays a role in cardiovascular issues, reducing it may only benefit rapid arterial lesion cases, like those in Marfan disease.
Area of Science:
- Cardiovascular Science
- Biomechanical Engineering
- Pathology
Context:
- Arteries experience mechanical forces, including shear stress and pulsatile flow related to heart rate.
- Atherosclerosis plaque formation is influenced by the distribution of these mechanical forces.
- Existing research supports the link between heart rate and cardiovascular complications.
Purpose:
- To explore the mechanical theory of atherosclerosis, focusing on the role of tangential forces.
- To evaluate the potential benefit of therapeutic heart rate reduction in managing cardiovascular complications.
- To identify specific conditions where heart rate reduction might be clinically significant.
Summary:
- Tangential mechanical forces, driven by heart rate and shear stress, are implicated in the development of atherosclerosis.
- Experimental and epidemiological data suggest a connection between heart rate and cardiovascular disease.
- The therapeutic benefit of lowering heart rate in atherosclerosis may be limited to cases with rapid arterial lesion progression, such as Marfan disease.
Impact:
- Provides a biomechanical perspective on atherosclerosis pathogenesis.
- Suggests a nuanced approach to heart rate management in cardiovascular disease.
- Highlights the importance of considering lesion progression rates when evaluating heart rate-lowering therapies.
Abstract:
The artery is subject to tangential mechanical forces, involving heart rate and shearing forces. A mechanical theory of atherosclerosis explains the preferential development of plaques according to the distribution of these forces. Experimental data and an epidemiological article are in favour of the role of heart rate in cardiovascular complications. However, the benefit of therapeutic reduction of heart rate will probably be difficult to prove except in cases in which arterial lesions develop rapidly, as demonstrated in Marfan's disease.