Medical Archive

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? ?? ???? ????? ?? ?. ?? ??? ???? ??.

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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 (??? ??? ??)