Which Carpentier type is characterized by restricted leaflet motion only in systole?

Which Carpentier type is characterized by restricted leaflet motion only in systole?

• A. Type I
• B. Type IIIb
• C. Type II
• D. Type IIIa

Answer: (B)

In this Carpentier framework, we classify mitral valve motion by how the leaflets move during the cardiac cycle. Type I means normal leaflet motion with MR from issues like annular dilation. Type II is increased leaflet motion, such as prolapse or flail. Type III is split into two patterns: IIIa, where the leaflets are restricted in both systole and diastole (often Rheumatic disease); and IIIb, where restriction occurs only during systole. When the leaflet motion is limited specifically in systole, it points to Type IIIb, typically due to tethering from papillary muscle displacement in ischemic or dilated cardiomyopathy.

In this Carpentier framework, we classify mitral valve motion by how the leaflets move during the cardiac cycle. Type I means normal leaflet motion with MR from issues like annular dilation. Type II is increased leaflet motion, such as prolapse or flail. Type III is split into two patterns: IIIa, where the leaflets are restricted in both systole and diastole (often Rheumatic disease); and IIIb, where restriction occurs only during systole. When the leaflet motion is limited specifically in systole, it points to Type IIIb, typically due to tethering from papillary muscle displacement in ischemic or dilated cardiomyopathy.