Table 1 Characteristics of the study population
All patients n = 31 | SBT success n = 17 | SBT failure n = 14 | p value | |
|---|---|---|---|---|
Gender, male, n (%) | 22 (71) | 12 (70) | 10 (71) | 1.000 |
Age, year | 65 (61–71) | 65 (51–68) | 71 (63–75) | 0.019 |
Body mass index, kg.m−2 | 25 (21–30) | 26 (21–31) | 24 (21–29) | 0.726 |
Duration of mechanical ventilation prior to inclusion, days | 6 (3–10) | 7 (4–9) | 4 (3–10) | 0.509 |
Comorbidities | ||||
Chronic respiratory disease, n (%) | 7 (23%) | 3 (18%) | 4 (29%) | 0.670 |
Chronic heart disease, n (%) | 4 (13%) | 1 (6%) | 3 (21%) | 0.304 |
Diabetes, n (%) | 3 (10%) | 2 (12%) | 1 (7%) | 1.000 |
Cirrhosis, n (%) | 7 (23%) | 5 (29%) | 2 (14%) | 0.411 |
Neuromuscular weakness, n (%) | 4 (13%) | 1 (6%) | 3 (21%) | 0.304 |
Reason for intubation | ||||
Acute respiratory failure, n (%) | 22 (71) | 10 (59) | 12 (86) | 0.101 |
Coma, n (%) | 4 (13) | 4 (24) | 0 (0) | 0.050 |
Cardiac arrest, n (%) | 2 (6) | 1 (6) | 1 (7) | 1.000 |
Shock, n (%) | 2 (6) | 1 (6) | 1 (7) | 1.000 |
Severity scores | ||||
SAPS II at ICU admission | 53 (37–74) | 61 (39–80) | 45.5 (30–61) | 0.414 |
SOFA at inclusion | 11 (7–14) | 12.5 (9.5–14) | 8.5 (6–12) | 1.000 |
Pain assessment and level of sedation | ||||
Pain-Visual Analogic Scale, mm | 0 (0–20) | 0 (0–15) | 0 (0–20) | 0.250 |
RASS | 0 (0–0) | 0 (0–0) | 0 (0–0) | 0.999 |