Table 3 Main computed tomography scan variables at 5 and 45 cmH2O of PEEP in patients divided according to the radiological pattern
Characteristics | Focal group (n = 58) | Diffuse group (n = 110) | p |
|---|---|---|---|
Total lung gas (mL) | 1222 [918 to 1974] | 743 [537 to 984] |  < 0.001 |
Total lung weight (g) | 1222 [1059 to 1394] | 1618 [1388 to 2001] |  < 0.001 |
Total lung volume (mL) | 2507 [2012 to 3224] | 2481 [2124 to 3071] | 0.985 |
Not aerated lung tissue (g) | 464 [361 to 625] | 864 [561 to 1249] |  < 0.001 |
Poorly aerated lung tissue (g) | 299 [217 to 364] | 506 [376 to 691] |  < 0.001 |
Well aerated lung tissue (g) | 401 [288 to 492] | 246 [185 to 334] |  < 0.001 |
Over aerated lung tissue (g) | 1 [0 to 6] | 0 [0 to 1] |  < 0.001 |
Δ45–5 total lung gas (mL) | 1712 [1299 to 2262] | 1268 [924 to 1799] |  < 0.001 |
Δ45–5 total lung volume (mL) | 1690 [1327 to 2338] | 1287 [950 to 1805] |  < 0.001 |
Δ45–5 not aerated lung tissue (g) | − 116 [− 193 to − 74] | − 355 [− 551 to − 190] |  < 0.001 |
Δ45–5 poorly aerated lung tissue (g) | − 60 [− 128 to − 8] | 11 [− 133 to 193] | 0.001 |
Δ45–5 well aerated lung tissue (g) | 133 [60 to 254] | 343 [228 to 43] |  < 0.001 |
Δ45–5 over aerated lung tissue (g) | 51 [20 to 95] | 6 [1 to 15] |  < 0.001 |
Lung recruitment (%) | 11 [6 to 16] | 21 [13 to 29] |  < 0.001 |
Overinflation (%) | 4.1 [1.9 to 7.6] | 0.3 [0.1 to 0.8] |  < 0.001 |