Table 4.
Respiratory function and lung CT scan quantitative data at hospital admission in survivors and non survivors patients
| Survivors n = 537 (78.5%) |
Non survivors n = 147 (21.5%) |
p | |
|---|---|---|---|
| Respiratory function | |||
| Respiratory rate, breaths/min | 20 [17–25] | 23 [20–56] | 0.115 |
| PaO2/FiO2 | 309.5 [266.7–347.6] | 255.7 [185.7–323.8] | < 0.001 |
| PaO2, mmHg | 69.0 [61.0–80.4] | 68.7 [56.9–84.0] | 0.355 |
| PaCO2, mmHg | 33.5 [30.5–36.7] | 32.0 [29.5–36.0] | 0.015 |
| Lung CT scan quantitative data | |||
| Total gas volume, ml | 2476 [1733–3425] | 2023 [1435–2623] | < 0.001 |
| Total lung weight, g | 938 [792–1121] | 991 [810–1202] | 0.064 |
| Over aerated lung weight, % | 2.2 [0.6–5.8] | 1.5 [0.6–4.2] | < 0.020 |
| Normally aerated lung weight, % | 61.9 [53.8–68.3] | 51.8 [41.4–62.0] | < 0.001 |
| Poorly aerated lung weight, % | 23.7 [18.1–30.3] | 30.5 [23–39.3] | < 0.001 |
| Not aerated lung weight, % | 8.4 [6–12.8] | 11.5 [7.1–18.5] | < 0.001 |
Continuous variables are expressed as median [IQR] and compared with Mann–Whitney U test
FiO2 inspired fraction of O2, PaO2 arterial partial pressure of O2, PaCO2 arterial partial pressure of CO2