In which patient group is an ejection click suggestive of aortic stenosis (AS)?

Updated: May 07, 2019
  • Author: Xiushui (Mike) Ren, MD; Chief Editor: Terrence X O'Brien, MD, MS, FACC  more...
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An ejection click is common in children and young adults with congenital aortic stenosis and mobile valve leaflets, but it is rare in elderly individuals with acquired calcific aortic stenosis, in whom the cusps become immobile and severely calcified. This sound occurs approximately 40-60 milliseconds after the onset of S1 and is frequently heard best along the mid to lower left sternal border; it is often well transmitted to the apex and may be confused with a split S1.

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