Aortic stenosis (AS) and aortic incompetence (AI) are two significant complications affecting the bicuspid aortic valve (BAV). AS, characterized by narrowed valve orifice and increased cardiac workload, has variable etiologies, including degenerative calcification, congenital BAV, and rheumatic heart disease, each with distinct clinical progression. BAV is the most common congenital cardiac malformation, predisposing to faster AS progression due to structural abnormalities and early calcification, often requiring intervention by the fifth decade. BAV is also associated with aortopathy, manifesting as aortic root dilatation and increased risk of dissection. AI, characterized by incomplete valve closure, leads to chronic left ventricular volume overload and eventual dysfunction. BAV-related AI frequently results from cusp prolapse or sinus dilation, by altered aortic wall composition. Both conditions exhibit diverse etiologies, clinical courses, and complications, requiring tailored interventions, including surgical aortic valve replacement (SAVR) or transcatheter aortic valve implantation (TAVI). Understanding the anatomical, pathological, and hemodynamic complexities of BAV-related AS and AI is critical for optimizing patient management and outcomes.

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Aortic Stenosis and Aortic Incompetence

  • Giuseppe Tarantini,
  • Tommaso Fabris,
  • Chiara Fraccaro,
  • Gaetano Thiene

摘要

Aortic stenosis (AS) and aortic incompetence (AI) are two significant complications affecting the bicuspid aortic valve (BAV). AS, characterized by narrowed valve orifice and increased cardiac workload, has variable etiologies, including degenerative calcification, congenital BAV, and rheumatic heart disease, each with distinct clinical progression. BAV is the most common congenital cardiac malformation, predisposing to faster AS progression due to structural abnormalities and early calcification, often requiring intervention by the fifth decade. BAV is also associated with aortopathy, manifesting as aortic root dilatation and increased risk of dissection. AI, characterized by incomplete valve closure, leads to chronic left ventricular volume overload and eventual dysfunction. BAV-related AI frequently results from cusp prolapse or sinus dilation, by altered aortic wall composition. Both conditions exhibit diverse etiologies, clinical courses, and complications, requiring tailored interventions, including surgical aortic valve replacement (SAVR) or transcatheter aortic valve implantation (TAVI). Understanding the anatomical, pathological, and hemodynamic complexities of BAV-related AS and AI is critical for optimizing patient management and outcomes.