What is the Kussmaul sign in cardiac tamponade?

Updated: Nov 28, 2018
  • Author: Chakri Yarlagadda, MD, FACC, FSCAI, FASNC, CCDS; Chief Editor: Terrence X O'Brien, MD, MS, FACC  more...
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This was described by Adolph Kussmaul as a paradoxical increase in jugular venous distention and pressure during inspiration. The Kussmaul sign is usually observed in patients with constrictive pericarditis, but it is occasionally is observed in patients with effusive-constrictive pericarditis and cardiac tamponade.

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