Spirometry and subjective sputum changes with heparin therapy
| Parameter | Pretherapy | Post-therapy | p-value |
| FEV1 % pred | 55.0±4.8 | 56.3±6.6 | 0.34 |
| Ease of sputum expectoration VAS | 4.6±0.55 | 6.8±0.60 | 0.04 |
| Sputum thickness VAS | 4.1±0.41 | 6.3±0.72 | 0.07 |
| Sputum volume VAS | 4.8±0.60 | 6.3±0.67 | 0.12 |
Data are presented as means±sem. FEV1: forced expectoratory volume in one second; VAS: visual analogue scale
0=hardest, 10=easiest
0=thickest, 10=thinnest
0=most, 10=least.