Duroziez's sign explained

Synonym:	Alvarenga-Duroziez sign
Differential:	Aortic insufficiency

Duroziez's sign is a sign of aortic insufficiency.^[1] It consists of an audible diastolic murmur which can be heard over the femoral artery when it is compressed with the bell of a stethoscope.^[2]

It is named for French physician Paul Louis Duroziez who published its description in 1861,^[3] even though it was first described by Portuguese physician Pedro Francisco da Costa Alvarenga in 1855;^[4] for this reason it is alternatively known as the Alvarenga-Duroziez sign.

Notes and References

1. Babu AN, Kymes SM, Carpenter Fryer SM . Eponyms and the diagnosis of aortic regurgitation: what says the evidence? . Ann. Intern. Med. . 138 . 9 . 736–42 . May 2003 . 12729428 . 10.7326/0003-4819-138-9-200305060-00010.
2. Huon H Gray et al., "Examination of the Head and Neck, Chapter 2: The Cardiovascular system, Lecture Notes on Cardiology, 4th Edtn, Blackwell Publishing, Oxford 2002
3. 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.
4. Book: Alvarenga, Pedro Francisco da Costa . 1856 . Mémoire sur l'insuffisance des valvules aortiques et considérations générales sur les maladies du cœur . French . Paris . Chez J.-B. Baillière .