Table 1

Causes of mitral regurgitation

Primary (valve apparatus)Usual Carpentier mechanism
CongenitalCleftII
ParachuteII
MyxomatousFibroelastic deficiencyII
Barlow diseaseII
DegenerativeAge-related
Mucopolysaccharidoses
InflammatoryRheumaticIIIA
Radiation (lymphoma, breast)IIIA
Drugs (dopamine agonists)IIIA
Infective endocarditisIB
Collagen vascular diseases
Secondary (ventricular/atrial)
IschaemicMyocardial infarctionIIIB
LV dilatation/dysfunctionI
Non-ischaemicLV dilatation/dysfunctionI
Left atrium dilatationI
  • LV, left ventricle.