From: Susceptibility to ventilator induced lung injury is increased in senescent rats
 | Old rats | Young rats | P |
---|---|---|---|
TWBC (/μl) | 4,800 ± 524 | 9,037 ± 638 | 0.02 |
_PMN in blood (/μl) | 867 ± 146 | 1,162 ± 65 | Ns |
_Macrophages in BAL (/μl) | 11,744 ± 2,172 | 10,882 ± 2,646 | Ns |
_Protein in BAL (mg/l) | 69 ± 35 | 97 ± 30 | Ns |
_Lung wet/dry weight ratio | 4.68 ± 0.09 | 4.65 ± 0.06 | Ns |
_PaO2 at FiO2 1.0 (mmHg) | 270 ± 60 | 446 ± 10 | 0.029 |
_PMN in BAL (/μl) | Not detectable in 3; low counts in 1 animal | Not detectable | n.a. |