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

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

Variable		Frequencies	Percentage (%)
Etiology	Primitive	431	85.5
	Secondary	53	10.5
	Mixed	20	4
Degree	Mild	392	77.8
	Moderate	104	20.6
	Severe	8	1.6
Mechanism ^a(Carpentier’s classification)	Type I	14	12.5
	Type II	4	2.7
	Type III a	53	46.4
	Type III b	41	34.8
Concomitantsignificative valve disease	Mitral Stenosis	1	0.2
	Aortic Regurgitation	22	4
	Aortic Stenosis	7	1
	Tricuspid regurgitation	55	11

ISSN: 1476-7120