Echo Values In Severe MR

Here are the echocardiographic markers of severe MR

• Vena contracta > 0.7cm
• PISA radius > 1cm
• Regurgitant fraction > 50%
• Regurgitant volume > 60 ml/beat
• Regurgitant jet occupies > 40% left atrium
• Regurgitant jet is large
• Pulmonary systolic vein flow reversal is seen
• Left heart is dilated
• The mitral valve is rarely normal - evidence of a ruptured papillary muscle or a flail leaflet
• E-wave velocity >1.5 m/s

Note: PISA is based on the principle of conservation of mass

References

1. Patrizio Lancellotti, Luis Moura, Luc A. Pierard, Eustachio Agricola, Bogdan A. Popescu,Christophe Tribouilloy, Andreas Hagendorff, Jean-Luc Monin, Luigi Badano,Jose L. Zamorano, on behalf of the European Association of Echocardiography, Document Reviewers:, Rosa Sicari, Alec Vahanian, and Jos R.T.C. Roelandt. European Association of Echocardiography recommendations for the assessment of valvular regurgitation. Part 2: mitral and tricuspid regurgitation (native valve disease)Eur J Echocardiogr (2010) 11(4): 307-332