According to the Carpentier classification of mitral regurgitation, a patient whose transoesophageal echocardiogram shows restricted systolic motion of both mitral leaflets tethered into the left ventricle by dilated papillary muscles belongs to which category?
- A Type I
- B Type II
- C Type IIIb ✓
- D Type IIIa
Correct answer: C. Type IIIb
Explanation
Carpentier Type IIIb denotes restricted leaflet motion during systole due to ventricular distortion, classically ischaemic or dilated cardiomyopathy with lateral displacement of papillary muscles tethering the leaflets. Type IIIa is restriction during both diastole and systole, seen in rheumatic disease. Type II is excessive motion such as prolapse or flail leaflet, and Type I is normal leaflet motion with annular dilation or cleft, none of which matches tethered leaflets.
Reference: Braunwald's Heart Disease, 12th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.