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Table 3 Reclassification of aortic stenosis severity based on different severity parameters

From: Going beyond classic echo in aortic stenosis: left atrial mechanics, a new marker of severity

Mean Gradient (mmHg)

Moderate AS (n=80)

Severe AS (n=102)

Severity criterion > 40

80

102

LA ɛsys (%)

≥11

<  11

≥11

< 11

Severity criterion < 11

75

5

70

32

LA ɛe (%)

≥9.4

< 9.4

≥9.4

< 9.4

Severity criterion < 9.4

59

21

16

86

LA ɛa (%)

≥18.5

< 18.5

≥18.5

< 18.5

Severity criterion < 18.5

76

4

4

98

Global strain (%)

≥0.56

< 0.56

≥ 0.56

< 0.56

Severity criterion < 0.56

56

24

25

77

  1. LA ɛsys left atrial systolic strain (reservoir function), LA ɛe left atrial early diastolic strain (conduit function), LA ɛa left atrial late diastolic strain (contractile function)