Characteristic | Stage | ||||||||
---|---|---|---|---|---|---|---|---|---|
 | A | B | C | D | |||||
Definition | At risk | Progressive | Asymptomatic severe | Symptomatic severe | |||||
Severity | Normal to trivial | Mild | Moderate | Severe | Massive | Torrential | |||
Echocardiography morphology | |||||||||
 Leaflet | Normal | Mild to moderate thickening | Severe thickening, flail, perforation, retraction | ||||||
 Coaptation | Normal, CIED, AF | Limited, prolapse, lead impingement | Severe loss, prolapse | ||||||
 Annulus | Normal | Dilation | Dilation | ||||||
VCW (mm) | - | < 3 | 3–6 | 7–13 | 14–20 | ≥ 21 | |||
EROA (cm2) | - | < 0.2 | 0.2–0.4 | 0.4–0.6 | 0.6–0.8 | ≥ 0.8 | |||
PISA radiusa (mm) | - | ≤ 5 | 6–8 | ≥ 9 | |||||
Regurgitant volume (mL) | - | < 30 | 30–45 | 45–59 | 60–74 | ≥ 75 | |||
Regurgitant fraction (%) | - | < 30 | 30–49 | ≥ 50 | |||||
RA/RV size | - | Normal or ↑ | ↑ | ||||||
Hepatic vein flow | - | Systolic dominance | Systolic blunting | Systolic flow reversal | |||||
TR-CW Doppler jet | - | Faint/ parabolic | Dense/ parabolic | Dense, triangular | |||||
Symptom | None | None | None | DOE, EI, right HF |