<prompt> Nicoladoni Branhams sign is seen in: March 2005Buerger diseaseaeriovenous fistulaRaynauds diseasePeripheral aneurysm  <response>: Ans. B: Aeriovenous fistula Nicoladoni signBranham signNicoladoni-Israel-Branham sign, is the slowing of the hea rate in response to manual compression of an aeriovenous fistula. Aeriovenous fistula may be either congenital or acquired. The structural effect of aerial blood flow on the veins is characteristic; they become dilated, touous and thick walled aerialized The physiological effect is that it can increase cardiac output, if big enough. Auscultation reveals a machinery murmur. 