Exam

Hamman's Sign

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Hamman's Sign, Hamman's Crunch

  • Pathophysiology
  1. Heart beat is audible as the Pericardium comes in contact with mediastinal air (mediastinal Emphysema)
  • Signs
  1. Crunching sound over the precordium synchronized with the heartbeat (especially in left lateral decubitus position)
  1. Tracheobronchial tree injury
  2. Esophageal Rupture
  3. Left Spontaneous Pneumothorax