cardiology

Aortic Stenosis Severity Classification (ACC/AHA)

Classifies aortic stenosis severity from echocardiographic parameters per ACC/AHA 2021 guidelines. Guides timing of intervention (TAVI or SAVR).

Score interpretation

Mild AS

→ Serial echo in 3-5 years; risk factor modification; no intervention

Moderate AS

→ Annual echo; exercise stress testing if asymptomatic; TAVI/SAVR if rapid progression

Severe AS (asymptomatic)

→ 6-monthly echo; TAVI or SAVR if LVEF < 50%, very severe AS, or exercise-induced symptoms

Severe Symptomatic AS

→ Urgent TAVI (TAVR) or SAVR; avoid vasodilators; avoid strenuous activity; expedite valve team review

Interpretation bands for the AS Severity. Apply clinical judgement and local guidance.

Curated clinical cross-links plus same-class fallbacks.

Drugs

Pathways

Decision support only — verify against a current formulary, NICE, or your local guideline before clinical use.