Table 1.
Demographic and Physiologic Features of Three Patients Who Developed a Pneumothorax After Pulmonary Function or Exercise Testing
| Patient | 1 | 2 | 3 |
|---|---|---|---|
| Age, y | 41 | 45 | 43 |
| Age of diagnosis, y | 40 | 44 | 43 |
| Race | White | White | White |
| Recurrent pneumothorax | Yes | No | Yes |
| History of chylothorax | No | Yes | No |
| History of pleurodesis | No | Yes | No |
| FEV1 (% predicted) | 105 | 104 | 80 |
| RV (% predicted) | 99 | 55 | 124 |
| RV/TLC ratio | 0.35 | 0.23 | 0.41 |
| Lung diffusion capacity CO2 (% predicted) | 102 | 91 | 86 |
| Peak VO2 (% predicted) | 76 | 83 | 170 |
| Peak Heart Rate (% predicted) | 97 | 93 | 96 |
| Peak SaO2 (%) | 99 | 94 | 95 |
| Pneumothorax after PFT | Yes | Possibly related | No |
| Pneumothorax after CPET | No | Possibly related | Yes |
| Treated with pleurodesis | Yes | No | Yes |
CPET = cardiopulmonary exercise testing; FEV1 = forced expiratory volume in the first second; PFT = pulmonary function testing; RV = residual volume; RV/TLC = ratio between RV and TLC; SaO2 = pulse oxygen saturation; TLC = total lung capacity; VO2 = oxygen uptake.