From: Respiratory distress observation scales to predict weaning outcome
Variables | All patients (n = 58) | SBT success (n = 25) | SBT failure (n = 33) | P value |
---|---|---|---|---|
Age, years | 63 (51–68) | 62 (50–73) | 63 (52–68) | 0.922 |
Gender (male), n (%) | 31 (53) | 15 (60) | 16 (48) | 0.384 |
Body mass index, kg/m2 | 25 (21–29) | 25 (20–31) | 24 (21–29) | 0.782 |
Comorbidities | ||||
Arterial hypertension, n (%) | 21 (36) | 9 (36) | 12 (36) | 1.000 |
COPD, n (%) | 11 (19) | 5 (20) | 6 (18) | 1.000 |
Diabetes, n (%) | 11 (19) | 4 (16) | 7 (21) | 0.742 |
Chronic kidney failure | 9 (16) | 5 (20) | 4 (12) | 0.479 |
Reasons for ICU admission | ||||
Acute respiratory failure, n (%) | 33 (57) | 15 (60) | 18 (54) | 0.678 |
Coma, n (%) | 13 (22) | 6 (24) | 7 (21) | 1.000 |
Cardiac arrest, n (%) | 8 (14) | 2 (8) | 6 (18) | 0.001 |
Other, n (%) | 4 (7) | 2 (8) | 2 (6) | 1.000 |
Clinical variables | ||||
Length of MV, days (at inclusion) | 5 (2–7) | 3 (2–6) | 5 (2–11) | 0.315 |
Number of previous SBT (at inclusion) | 1 (1–1) | 1 (1–1) | 1 (1–1) | 0.731 |
SAPS II (at admission) | 63 (49–76) | 57 (46–75) | 66 (50–76) | 0.388 |
SOFA (at admission) | 10 (7–12) | 10 (7–11) | 10 (7–12) | 0.591 |
Readiness to wean assessment at inclusion | ||||
Heart rate, beats/min | 93 (84–100) | 92 (79–101) | 93 (84–99) | 0.735 |
Systolic arterial blood pressure, mmHg | 132 (116–145) | 125 (111–141) | 140 (117–152) | 0.094 |
Bicarbonate, mmol/L | 27 (23–31) | 25 (19–29) | 28 (24–32) | 0.105 |
PaO2/FiO2 | 248 (178–329) | 315 (211–355) | 230 (157–285) | 0.014 |
Positive end-expiratory pressure, cmH2O | 5 (5–6) | 5 (5–6) | 6 (5–6) | 0.092 |
Respiratory rate, breaths/min | 22 (17–27) | 19 (16–25) | 22 (17–29) | 0.189 |
Expired tidal volume, ml/IBW | 6.9 (6.2–8.4) | 7.0 (6.6–9.2) | 6.8 (5.8–8.2) | 0.167 |