Aortic stenosis with coexistent aortic regurgitation – Causes

Aortic stenosis – rheumatic
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In the following conditions, aortic stenosis can coexist with aortic regurgitation (aortic incompetence).

  • Rheumatic
  • Congenital bicuspid aortic valve
  • Calcific degeneration of aortic valve
  • Atherosclerotic degeneration of aortic valve
  • Infective endocarditis in a case of aortic stenosis

H0w aortic stenosis and regurgitation can coexist?

  • It can be explained by the following analogy
  • Consider a normal aortic valve to be a door
  • It closes and opens completely during each cardiac cycle
  • Now consider the door to be stuck in the mid position
  • It neither closes completely nor opens completely
  • Similarly, when the aortic valve is deformed, both stenosis and regurgitation can coexist

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