Table 2 Lung function, pulse oximetry and Borg dyspnea score during sputum induction, according to COPD severity.
From: Dyspnea assessment and adverse events during sputum induction in COPD
Overall | COPD severity (GOLD stages) | |||||
|---|---|---|---|---|---|---|
Stage I | Stage II | Stage III | Stage IV | |||
n = 65 | n = 5 | n = 24 | n = 22 | n = 14 | ||
Median (IQR) change* | p-value | |||||
Borg | 1.5 (0, -2) | 0 (0, 1) | 1 (0, 1) | 1.5 (0, 2) | 1.5 (0, 3) | 0.02 |
SpO 2 % | -1 (0, -2) | -0 (0, 0) | -1 (0, -1.5) | -1.5 (0, -3) | -2.5 (-1.5, -3) | 0.001 |
Heart rate | 25 (10, 33) | 15 (8, 22) | 17 (10, 25) | 21 (12, 29) | 32(10, 45) | 0.09 |
FEV 1 | -9.5 (-3, -15) | -11 (-3, -17) | -5 (0,-8) | -12 (-3, -17) | -9 (-3, -12) | 0.32 |