In MVP, diastolic thickness is greater than ______ mm.

In MVP, diastolic thickness is greater than ______ mm.

• A. > 5 mm
• B. < 3 mm
• C. 3-5 mm
• D. No thickness requirement

Answer: (A)

In MVP, the mitral leaflets become thickened due to myxomatous degeneration, so their size is a key imaging clue. When you measure the leaflet thickness on echo, you do it in diastole; if the diastolic thickness is greater than 5 mm, that thickened leaflet is a characteristic finding supporting MVP. Normal leaflet thickness is typically about 1–3 mm, while 3–5 mm is a gray area that isn’t as diagnostic. Saying there’s no thickness requirement would ignore this characteristic feature. So the diastolic thickness being greater than 5 mm best reflects what’s commonly seen with MVP.

In MVP, the mitral leaflets become thickened due to myxomatous degeneration, so their size is a key imaging clue. When you measure the leaflet thickness on echo, you do it in diastole; if the diastolic thickness is greater than 5 mm, that thickened leaflet is a characteristic finding supporting MVP. Normal leaflet thickness is typically about 1–3 mm, while 3–5 mm is a gray area that isn’t as diagnostic. Saying there’s no thickness requirement would ignore this characteristic feature. So the diastolic thickness being greater than 5 mm best reflects what’s commonly seen with MVP.