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 |