| Failed extubation (n = 11) | Successful extubation (n = 42) | Unadjusted OR (95% CI) | p value |
---|---|---|---|---|
Characteristics | ||||
 Male n (%) | 10 (90.9) | 24 (57.1) | 0.13 (0.01–1.14) | 0.06 |
 Age, years median (IQR) | 77.0 (65.0–81.0) | 63.5 (45.7–73.3.0) | 1.05 (0.99–1.11) | 0.06 |
 Ideal body weight (kg) median (IQR) | 61.0 (54.7–63.9) | 62.3 (54.6–66.2) | 0.96 (0.87–1.06) | 0.44 |
 BMI kg/m2 median (IQR) | 27.0 (23.3–35.1) | 27.0 (24.1–31.0) | 1.0 (0.9–1.11) | 0.95 |
 Ischaemic heart disease n (%) | 7 (63.6) | 9 (21.4) | 6.41 (1.53–26.88) | 0.01 |
 Heart failure n (%) | 3 (27.3) | 5 (11.9) | 2.77 (0.54–14.05) | 0.21 |
 Diabetes mellitus n (%) | 6 (54.5) | 9 (21.4) | 4.40 (1.08–17.79) | 0.03 |
 COPD n (%) | 3 (27.3) | 6 (14.3) | 2.25 (0.46–10.96) | 0.31 |
ICU severity score | ||||
 APACHE II median (IQR) | 20.0 (17–23) | 20.0 (15.0–23.3) | 1.06 (0.94–1.20 | 0.31 |
 APACHE III median (IQR) | 82.0 (61.0–97.0) | 74.5 (60.5–89.5) | 1.02 (0.99–1.04) | 0.21 |
 SAPS II median (IQR) | 42.0 (33.0–46.0) | 46.0 (36.0–57.3) | 0.99 (0.94–1.04) | 0.72 |
Weaning trial | ||||
 Respiratory rate (breath/min) median (IQR) | 24 (18–30) | 18 (15–23) | 1.14 (1.01–1.27) | 0.02 |
 Tidal volume (l) median (IQR) | 0.48 (0.39–0.58) | 0.51 (0.41–0.75) | 0.11 (0.00–5.76) | 0.27 |
 Pressure support (cmH2O) median (IQR) | 0.0 (0.0–10.0) | 0.0 (0.0–7.2) | 1.04 (0.89–1.22) | 0.58 |
ICU outcomes | ||||
 Extubation failure n (%) | ||||
  ICU LOS (day) median (IQR) | 10.5 (9.7–17.5) | 7.9 (5.5–13.0) | 1.14 (0.99–1.25) | 0.06 |
  Time from extubation to ICU discharge (days) median (IQR) | 4.1 (3.1–7.1) | 1.9 (1.0–5.1) | 1.13 (0.95–1.34) | 0.14 |
  Hospital LOS (day) median (IQR) | 19.2 (16.1–33.1) | 16.4 (11.2–24.1) | 1.00 (0.96–1.04) | 0.71 |
  In-hospital mortality n (%) | 2 (18.2) | 3 (7.1) | 0.34 (0.05–2.38) | 0.28 |
  Duration of MV (h) median (IQR) | 175.0 (99.1–238.5) | 130.6 (93.7–180.5) | 1.00 (0.99–1.01) | 0.11 |