Total (n = 25) | Group A (n = 17)a | Group B (n = 8)a | P | |
---|---|---|---|---|
Weaned | not weaned | |||
General characteristics | ||||
Age,yr b | 68 [49–81] | 68 [49–81] | 68.5 [51–77] | 0.52 |
M/F | 19/6 | 13/4 | 6/2 | 0.68 |
SAPS II b | 39 [22–79] | 39 [28–79] | 38.5 [22–69] | 0.69 |
Pulmonary status during a phase of clinical stability | ||||
FEV1 l b | 0.66 [0.220-2.50] | 0.710 [0.220-2.50] | 0.630 [0.32-1.47] | 0.60 |
FEV1predicted b | 30 [11–80] | 31 [11–80] | 26.5 [15–50] | 0.33 |
PaO2 mmHg b | 69 [41–95] | 69 [50–95] | 69 [41–86] | 0.52 |
PaCO2 mmHg b | 49 [30–91] | 48 [30–91] | 54 [40–61] | 0.37 |
pH b | 7.40 [7.28-7.50] | 7.40 [7.33-7.50] | 7.38 [7.28-7.45] | 0.84 |
Arterial blood gases at admission | ||||
PaO2/FiO2 b | 220 [22–250] | 220 [22–250] | 157 [120–250] | 0,57 |
PaCO2 mmHg b | 75 [50–114] | 74.5 [56–114] | 76 [50–102] | 0,46 |
pH b | 7.25 [7.07-7.39] | 7,29 [7.07-7.37] | 7,24 [7.08-7.39] | 0.49 |
Cardiac echography at admission | ||||
LVEF b | 60 [30–70] | 60 [40–70] | 50 [30–65] | 0.26 |
PAPs b | 45 [25–80] | 45 [25–65] | 50 [30–80] | 0.45 |
Cause of respiratory failure | ||||
Acute exacerbation a | 12 (48%) | 8 (47%) | 4 (50%) | 0.63 |
Pneumonia a | 9 (36%) | 5 (30%) | 4 (50%) | 0.37 |
Pulmonary embolism a | 2 (8%) | 2 (11.5%) | 0 (0%) | 0.43 |
Other a | 2 (8%) | 2 (11.5%) | 0 (0%) | 0.43 |
Nutritional status | ||||
BMI b | 25 [18–37] | 25 [19–36.7] | 25 [18–37] | 0.86 |
NRI b | 82.9 [66–102] | 82.8 [66–93] | 80.4 [73–102] | 0.73 |
Albumin b | 27 [20–38] | 27 [20–34] | 27.5 [21–38] | 0.49 |
Prealbumin b | 195 [74–400] | 215 [130–400] | 164 [74–337] | 0.50 |
Corticoïds a | 3 (12%) | 2 (11.8%) | 1 (12.5%) | 0.72 |
ADL score c | 4.6 ± 1.1 | 5,1 ±1.1 | 3.7 ± 0.7 | 0.006 |