Characteristics, spirometric findings, diffusion capacities, and arterial blood gas values of the four patients with hypersensitivity pneumonitis (HP)
| Case | Age (years) | Gender | Tobacco (pack-years) | Exposure | Time frame | Clinical features | Physical examination | Stage of HP | Spirometric tests | Diffusion capacity (DLCO % of predicted, DLCO/VA) | Arterial blood gases |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DLCO, diffusion capacity of the lung for carbon monoxide; DLCO/VA, DLCO adjusted for alveolar volume; Po2, partial oxygen pressure. | |||||||||||
| 1 | 38 | M | 30 | Archive clerk, dust | 5 months | Dyspnoea, dry cough, | Crackles, ronchi | Chronic | Normal | Normal (101, 96.3) | Normal Po2; hypoxaemia after exercise (Po2 8.9 kPa) |
| 2 | 45 | F | 0 | Lovebird | 3 months | Dyspnoea, dry cough | Crackles, ronchi | Subacute | Normal | Decreased (55, 70) | Hypoxaemia at rest (Po2 9.3 kPa) |
| 3 | 36 | M | 0 | Archive clerk, dust | 3 years | Dry cough | Normal | Chronic | Normal | Decreased (44, 57) | Normal |
| 4 | 59 | F | 0 | Lovebird | 3 years | Dry cough | Normal | Chronic | Normal | Decreased (64, 70) | Normal |