Moderate aortic stenosis is frequently under‑recognized, yet many patients develop symptoms, myocardial damage, and excess mortality before meeting criteria for severe disease, making consistent surveillance and timely reassessment essential to care. 

On this site, healthcare providers will find practical tools, educational materials, and on‑demand programs developed through the American Heart Association’s heart valve initiatives to support earlier identification of at‑risk patients, optimize longitudinal monitoring, and expand access to emerging therapeutic and research opportunities that may improve outcomes in moderate AS.

1. 2020 ACC/AHA Guideline for the Management of Patients With Valvular Heart Disease: A Report of the American College of Cardiology/American Heart Association Joint Committee on Clinical Practice Guidelines | Circulation
2. Managing Patients With Moderate Aortic Stenosis: Key Points - American College of Cardiology
3. Moderate Aortic Stenosis Progression: When Do We Reassess? - PMC