<prompt> Answer this question truthfullyWhat follow-up is recommended for aortic stenosis?  <response>: <reason> Frequency of echocardiograms in asymptomatic patients with aortic stenosis with normal stroke volume:Progressive stage B with mild severity V max 2.0-2.9 ms: every 3-5 years Progressive stage B with moderate severity V max 3.0-3.9 ms: every 1-2 years Severe stage C V max 4 ms: every 6-12 months 