What is the role of tension pneumopericardium in the development 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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The hemodynamic changes in tension pneumopericardium simulate acute cardiac tamponade. Clinically, distant heart sounds, bradycardia, and shifting tympany occur over the precordium, and a characteristic murmur, termed bruit de la roue de moulin, is heard. This is usually observed in infants with mechanical ventilation but is also seen after sternal bone marrow aspiration, penetrating chest wall injury, esophageal rupture, and bronchopericardial fistula.

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