Nicoladoni sign

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In medicine, the Nicoladoni sign, also Branham sign and Nicoladoni-Israel-Branham sign, is the slowing of the heart rate in response to (manual) compression of an arteriovenous fistula.[1][2][3]

It is named after Carl Nicoladoni.


  1. ^ Branham's sign. The Free Dictionary. URL:'s+sign. Accessed on: September 28, 2008.
  2. ^ synd/2995 at Who Named It?
  3. ^ Velez-Roa S, Neubauer J, Wissing M, et al. (June 2004). "Acute arterio-venous fistula occlusion decreases sympathetic activity and improves baroreflex control in kidney transplanted patients". Nephrol. Dial. Transplant. 19 (6): 1606–12. doi:10.1093/ndt/gfh124. PMID 15034165.