Mitral regurgitation stages
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Primary Mitral Regurgitation
Stages of Primary Mitral Regurgitation
| STAGE | DEFINITION | VALVE ANATOMY | VALVE HEMODYNAMICS | HEMODYNAMIC CONSEQUENCES | SYMPTOMS |
|---|---|---|---|---|---|
| A | At risk of MR | ❑ Mild MVP, normal coaptation ❑ Mild valve thickening with leaflet restriction |
❑ No MR jet area OR ❑ Central jet area < 20% LA on doppler ❑ Small vena contracta< 0.3 cm |
None | None |
| B | Progressive MR | ❑ Severe MVP, normal coaptation ❑ Rheumatic valve changes with leaflet restriction, loss of central coaptation ❑Prior IE |
❑ Central jet area 20-40% LA OR late systolic eccentric jet MR ❑ Vena contracta < 0.7 cm ❑Regurgitant volume < 60 ml ❑ Regurgitant fraction < 50 % ❑ ERO < 0.40 cm2 ❑ Angiographic grade 1 - 2+ |
❑ Mild LA enlargement ❑ No LV enlargement ❑Normal pulmonary pressure |
None |
| C | Asymptomatic severe MR | ❑ Severe MVP, flail leaflet ❑ Rheumatic valve changes with leaflet restriction, loss of central coaptation ❑Prior IE ❑ Thickening of leaflets in case of radiation heart disease |
❑ Central jet area > 40% LA OR holosystolic eccentric jet MR ❑ Vena contracta ≥ 0.7 cm ❑Regurgitant volume ≥ 60 ml ❑ Regurgitant fraction ≥ 50 % ❑ ERO ≥ 0.40 cm2 ❑ Angiographic grade 3 - 4+ |
❑ Moderate to severe LA enlargement ❑ LV enlargement ❑Pulmonary hypertension present at rest or with exercise ❑ C1: LVEF > 60% and LVESD < 40 mm ❑C2: LVEF ≤ 60 % and LVESD ≥ 40 mm |
None |
| D | Symptomatic severe MR | ❑ Severe MVP, flail leaflet ❑ Rheumatic valve changes with leaflet restriction, loss of central coaptation ❑Prior IE ❑ Thickening of leaflets in case of radiation heart disease |
❑ Central jet area > 40% LA OR holosystolic eccentric jet MR ❑ Vena contracta ≥ 0.7 cm ❑Regurgitant volume ≥ 60 ml ❑ Regurgitant fraction ≥ 50 % ❑ ERO ≥ 0.40 cm2 ❑ Angiographic grade 3 - 4+ |
❑ Moderate to severe LA enlargement ❑ LV enlargement ❑Pulmonary hypertension present |
❑ Decreased exercise tolerance ❑ Exertional dyspnea |