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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)