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Test Findings
 
 

Hyperinflation

 
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Overview

  • Look For

  • Hyperlucency of the lung fields
  • Diaphragmatic flattening
  • Ten or more posterior ribs visible above the diaphragm
  • Mediastinal narrowing
  • Example

  • Hyperinflation in a patient with emphysema
  • Hyperinflation in a patient with emphysema
     
  • Significance

  • Hyperinflation is a sign of emphysema, though can rarely occur with other obstructive diseases such as asthma and bronchiectasis.
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