Assertion: aortic stenosis's symptom | /r/Desires | valve replacement
Facets:
Source sentences:
text: In addition, about 80% ofasymptomatic patients with a jet velocity > 4.0 m/s will develop symptoms requiring valve replacement within two years.
text: Clinically significant obstruction of flow through the valve is present in about 1 to 2 % of adults over the age of 65 years, and it is likely that most of these patients will ultimately have symptoms necessitating valve replacement.