1 = leicht
2 = mittel
3 = schwer
4 = dekompensiert

mild (area >1.5 cm2)
moderate (area >1.0 to 1.5 cm2), or
severe (area <1.0 cm2)

Klassifikation modifiziert nach:

BONOW et al., ACC/AHA TASK FORCE REPORT. JACC Vol. 32, No. 5, November 1998:1486-1588

ACC/AHA Guidelines for the Management of Patients With Valvular Heart Disease