Mansoor, 67, is height 165 cm and has been a smoker for 50 years.

He has a history of increasing shortness of breath, chest infections, chronic cough, and hospital admissions (2 in the past 2 years) for respiratory failure secondary to pneumonia. His breathlessness is reproducibly related to effort. A recent chest X-ray shows significant hyperinflation.

Mansoor is referred for lung function tests to document ventilatory function and response to bronchodilator.

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Legend:
Predicted - white line
Pre BD - green
Post BD - red

 

Expiration

Pre bronchodilator

Inspiration

Expiration

Post bronchodilator

Inspiration

  Predicted Pre-BD Post-BD
  FEV1L 2.57 0.85 0.90
  FVC L 3.32 2.20 2.5
  FER % 77 39 36
FEF25-75%L/s 3.5 0.9 0.9
  PEF L/s 7.2 2.2 2.6
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