• Key idea: The two most common murmurs heard in setting of Marfan syndrome include aortic regurgitation (early decrescendo diastolic murmur heard best at left/right upper sternal border) and mitral valve prolapse (mid-systolic click followed by mid-to-late systolic murmur of mitral regurgitation heard best at the apex)
• Key idea: HOCM and MVP are the two murmurs that improve with increases in preload (increased preload leads to less obstruction in HOCM and later MVP murmur because the LV will be more stretched and the chordae tendinae will be more taut)

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