Aortic stenosis: insights on pathogenesis and clinical implications.

Area of Science:

• Cardiology
• Pathobiology
• Geriatrics

Background:

• Aortic stenosis (AS) is a prevalent valvular heart disease in adults over 75, affecting approximately 3% of this population.
• Degenerative AS in the elderly typically involves trileaflet valves and exhibits characteristics of an active, atherosclerosis-like pathogenesis.
• Understanding the complex patho-biological processes of AS is crucial for developing effective interventions.

Purpose of the Study:

• To provide a comprehensive overview of the current understanding of aortic stenosis pathogenesis.
• To explore the potential therapeutic targets for preventing and inhibiting AS development and progression.
• To discuss the practical implications of AS pathogenesis insights for clinical management and risk stratification.

Main Methods:

• Review of scientific evidence on the initiation and progression of degenerative aortic stenosis.
• Analysis of factors contributing to AS, including mechanical stress, genetic predisposition, inflammation, and calcification.
• Discussion of clinical management strategies, emphasizing risk stratification and consideration of comorbidities.

Main Results:

• The initiation of degenerative AS shares similarities with atherosclerosis.
• AS progression is influenced by a multifactorial interplay of mechanical stress, genetics, inflammation, and calcification.
• Improved understanding of AS pathogenesis opens avenues for novel therapeutic strategies.

Conclusions:

• Insights into AS pathogenesis, particularly the role of atherosclerosis-like mechanisms and progression drivers, are vital for clinical practice.
• Accurate risk stratification in elderly AS patients requires assessing individual frailty and global atherosclerotic burden beyond generic scores.
• Further research into AS patho-biology can lead to targeted therapies and improved patient outcomes.