Aortic Regurgitation
Evaluate AR severity and explore intervention pathways. AR management is driven by severity, LV adaptation, and symptom status — not by a single echocardiographic parameter.
Assess AR severity
Classify AR severity using ACC/AHA 2020 integrated criteria: qualitative grade, vena contracta width, PISA EROA, regurgitant volume, regurgitant fraction, and holodiastolic aortic flow reversal. Includes LV staging context and acute AR red flag screening.
AR Intervention Navigator
Evaluate intervention pathways for significant AR based on severity, LV function, aortic root anatomy, and clinical context.
Clinical context
Integrated criteria — no single number defines severe AR
Severe AR is defined by agreement across multiple parameters: qualitative grade, VC width, EROA, regurgitant volume, regurgitant fraction, and holodiastolic aortic flow reversal. Discordant results require comprehensive assessment, not a single measurement override.
PHT is not a severity signal
Pressure half-time reflects LV compliance and diastolic equilibration, not regurgitant orifice area. PHT shortens with LV dilation — it is an indirect indicator affected by LV adaptation, not a primary AR severity criterion.
LV function drives timing, not severity alone
Intervention timing in asymptomatic severe AR depends on LV response: LVEF < 55% (Stage C2) or significant LV dilation (LVEdd > 65 mm) triggers intervention evaluation even without symptoms. Serial LV assessment is central to AR management.
Learn AR reasoning
Understand AR severity, LV response, and acute red flags through tool-linked explanations and cases.
View explanations and cases