Exam

Coin Test

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Coin Test, Bell tympany

  • Indication
  1. Diagnosis of Pneumothorax
  • Technique
  1. Assistant holds one coin flat against chest
    1. Strikes coin with a second coin
  2. Examiner auscultates back on same side as assistant
  • Interpretation
  1. In Pneumothorax, a clear ringing "bell" sound transmits