Duroziez's sign is a sign of aortic insufficiency. It consists of an audible systolic-diastolic murmur which can be heard over the femoral artery when it is compressed with the bell of a stethoscope.
It is named for French physician Paul Louis Duroziez who published its description in 1861,P. L. Duroziez. Du double souffle intermittent crural, comme signe de l’insuffisance aortique. Archives générales de médecine, Paris, 1861, 5 sér., 17: 417-443, 588-605. even though it was first described by Portuguese physician Pedro Francisco da Costa Alvarenga in 1855; for this reason it is alternatively known as the Alvarenga-Duroziez sign.
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