Pulmonary Function Testing
Case 9
A 35 year-old previously healthy man presents with dyspnea, fevers, chills and night sweats for the past 2 months. He is a non-smoker with no concerning habits or occupational exposures. His pulmonary function tests are as follows:
Her pulmonary function testing is as follows:
| Pre-Bronchodilator (BD) | |||
|---|---|---|---|
| Test | Actual | Predicted | % Predicted |
| FVC (L) | 1.66 | 4.48 | 37 |
| FEV1 (L) | 0.94 | 3.67 | 26 |
| FEV1/FVC (%) | 57 | 82 | |
| RV (L) | 1.39 | 1.66 | 84 |
| TLC (L) | 3.06 | 5.96 | 51 |
| RV/TLC (%) | 45 | 29 | |
| Check abbreviations>> | |||
His flow volume loops is as follows:
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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