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Table 2 Classification of MR based on etiology, mechanism, degree and frequencies of concomitant valve disease in the study population

From: Global longitudinal strain is a hallmark of cardiac damage in mitral regurgitation: the Italian arm of the European Registry of mitral regurgitation (EuMiClip)

VariableFrequenciesPercentage (%)
EtiologyPrimitive43185.5
Secondary5310.5
Mixed204
DegreeMild39277.8
Moderate10420.6
Severe81.6
Mechanism a(Carpentier’s classification)Type I1412.5
Type II42.7
Type III a5346.4
Type III b4134.8
Concomitantsignificative valve diseaseMitral Stenosis10.2
Aortic Regurgitation224
Aortic Stenosis71
Tricuspid regurgitation5511
  1. aOnly for patients with moderate to severe MR