Table 2. Perioperative respiratory function of anatomical lung resection patients with untreated COPD and ACO.
| Parameter | FEV1 (L), median [IQR] | P value | |
|---|---|---|---|
| Untreated (n=31) | Intervention (n=61) | ||
| Before surgery | |||
| FEV1 | 2.19 [1.58–2.67] | 1.96 [1.58–2.40] | 0.30 |
| Postint FEV1 | 2.18 [1.71–2.51] | ||
| Postint − Preint FEV1 | 0.12 [0.06–0.26] | ||
| Predicted postop FEV1 | 1.80 [1.32–2.10] | 1.53 [1.22–1.91] | 0.18 |
| Predicted postop after postint FEV1 | 1.62 [1.37–2.05] | ||
| After surgery | |||
| Postop FEV1 | 1.73 [1.38–2.09] | 1.91 [1.59–2.26] | 0.11 |
| Postop − Preop FEV1 | −0.25 [−0.46 to −0.12] | −0.05 [−0.31 to 0.17] | 0.0026 |
| Postop − Predicted FEV1 | 0.04 [−0.13 to 0.24] | 0.33 [0.10–0.54] | <0.0001 |
| Postop − Predicted after postint FEV1 | 0.27 [0.06–0.42] | ||
COPD, chronic obstructive pulmonary disease; ACO, Asthma-COPD overlap; FEV1, forced expiratory volume in 1 second; IQR, interquartile range; int, intervention; op, operative.