[Table/Fig-3]:
Changes in pulmonary function parameters after radiotherapy
| Pulmonary function parameters | Mean± SD | p-value | Percentage difference from baseline | p value | ||
|---|---|---|---|---|---|---|
| Baseline | 3 months | RP Yes | RP No | |||
| FEV1 | 1.97±0.39 (L) | 1.82±0.38 (L) | <0.001 | 9.5 | 6.3 | 0.239 |
| FVC | 2.34 ±0.45 (L) | 2.16±0.43 (L) | <0.001 | 9.1 | 6.03 | 0.355 |
| TLC | 3.90±0.62 (L) | 3.50±0.72 (L) | <0.001 | 14.5 | 6.3 | 0.02 |
| DLCO | 5.33±1.79 mmol/min/kPa | 6.16±8.58 mmol/min/kPa | 0.515 | -2.3 | -37.6 | 0.42 |
| DLCO/VA | 1.83±0.55 mmol/min/kPa/L | 1.76±0.35 mmol/min/kPa/L | 0.315 | 1.64 | 0.13 | 0.805 |
(SD=standard deviation, RP=radiation pneumonitis, FEV1= Forced Expiratory Volume in first second, FVC= Forced Vital Capacity, TLC= Total Lung Capacity, DLCO= transfer factor, DLCO/VA= Krogh's constant