How is the inspiratory traction sign identified in the workup of 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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Answer

Boltwood et al described the diastolic equalization of pulmonary capillary and right atrial pressures as predominantly inspiratory; this is known as the inspiratory traction sign. [22] It results from inspiratory traction of the taut pericardium by the diaphragm.


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