Table 3 Markers of severe Aortic Regurgitation (AR) according to international guidelines
From: Echocardiographic assessment of aortic regurgitation: a narrative review
Markers of severe AR | ||
|---|---|---|
| Â | American College of Cardiology & American Heart Association [21, 56] | European Association of Cardiovascular Imaging & European Society of Cardiology [20, 30] |
Qualitative parameters | ||
 Doppler jet width | Large in central jets | Large in central jets |
Variable in eccentric jets | Variable in eccentric jets | |
 Flow convergence zone | Large | Large |
 Diastolic flow reversal in descending aorta | Prominent holodiastolic reversal | Holodiastolic flow reversal (End-diastolic velocity ≥ 20 cm/s) |
Semi-quantitative parameters | ||
 Vena contracta width |  > 0.6cm |  > 0.6cm |
 Jet width / LVOT width |  ≥ 65% |  ≥ 65% |
 Pressure half time |  < 200ms |  < 200ms |
Quantitative parameters | ||
 Effective Regurgitant Orifice Area |  ≥ 0.30cm2 |  ≥ 0.30cm2 |
 Regurgitant volume |  ≥ 60mls |  ≥ 60mls |
 Regurgitant fraction |  ≥ 50% |  ≥ 50% |