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🌱 來自: Midsystolic Murmurs

aortic midsystolic murmurs

 Obstructive

• Supravalvular–supravalvular AS, coarctation of the aorta
• Valvular–AS and aortic sclerosis
• Subvalvular–discrete, tunnel or HOCM

The obstructive form of hypertrophic cardiomyopathy (HOCM) is associated with a midsystolic murmur that is usually loudest along the left sternal border or between the left lower sternal border and the apex. The murmur is produced by both dynamic left ventricular outflow tract obstruction and MR, and thus, its configuration is a hybrid between ejection and regurgitant phenomena.

 Increased flow, hyperkinetic states, AR, complete heart block

• Dilation of ascending aorta, atheroma, aortitis