Table 1.

Characteristics of unfavourable anatomy for percutaneous mitral commissurotomy

Wilkins score > 8 (echocardiographic): immobile leaflets, thick mitral leaflets and sub-valvular apparatus, extensive calcification

Cormier group 3 (imaging): calcification of mitral valve of any extent as assessed by fluoroscopy

Very small mitral valve area

Non-rheumatic mitral stenosis

Severe tricuspid regurgitation

Left atrial thrombus

Concomitant indications for heart surgery such as coronary artergy bypass graft