Definite

A: Pathological MR and at least 2 morphological features of RHD of MV

(either of)

B: MS mean gradient ≥ 4mm Hg

C: Pathological MR and at least 2 morphological features of RHD of AV

D: Borderline disease of both AV and MV

Borderline

A: At least 2 morphological features of RHD of MV without pathological MR or MS

(either of)

B: Pathological MR

C: Pathological AR

Normal

Physiological MR (MR not meeting all 4 Doppler echocardiographic criteria)

Physiological AR (AR not meeting all 4 Doppler echocardiographic criteria)

Isolated morphological feature of RHD of MV without associated pathological stenosis or regurgitation

Morphological feature of RHD of AV without associated pathological stenosis or regurgitation