med 610 clinical respiratory diseases & critcare med

Pulmonary Function Testing

Case 2

A 54 year-old man presents to his primary care provider with dyspnea and a cough. He is a non-smoker with no relevant occupational exposures.

  Pre-Bronchodilator (BD) Post- BD
Test Actual Predicted % Predicted Actual % Change
FVC (L) 3.19 4.22 76 4.00 25
FEV1 (L) 2.18 3.39 64 2.83 30
FEV1/FVC (%) 68 80   71 4
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His flow volume loops is as follows:

flow volume loop graph

 

Describe the pattern of abnormality, if one is present.

Grade the severity of the abnormality.

Generate a differential diagnosis for the observed abnormality.

 

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