Due to myxoid degeneration (accumulation of ground substance) of the valve, making it floppy. -> Seen in 2-3% of US adults
cf) rheumatic heart disease -> MS, MR, AR
Post. Leaflet? ?? ???? ????? ?? ?. ?? ??? ???? ??.
Physical exam
- C234 Physical Examination of the Cardiovascular System
- Auscultation
- Mid-late systolic click. High-pitched, crescendo-decrescendo.
- Click and murmur become louder with valsalva or slow squatting (increased systemic resistance decreases left ventricular emptying).
- As the severity of leaflet dysfunction and MR worsens, the murmur becomes holosystolic and the click may not be audible.
Treatment
??? ??? ??x. Chest pain, palpitation ?? ? BB ??.
Complications are rare, but include infectious endocarditis, arrhythmia, and severe mitral regurgitation.
Severe MR? ?? ??: mitral valve repair or replacement
TIA: aspirin, anticoagulant (??? ??? ??)
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