Quantification of common paravalvular aortic regugitation challanging as most common critera fail. Holodiastolic abdominal aortic flow reversal a good sign of significant aortic regurgitation. Alternative: ((Diast. BP - LVEDP)/ Syst. BP)*100; values < 25 indicate relevant MR with reduced 1 year mortality 4
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- Aortic regurgitation index defines severity of peri-prosthetic regurgitation and predicts outcome in patients after transcatheter aortic valve implantation., Sinning et al., J Am Coll Cardiol. 2012 Mar 27;59(13):113-41.