Table 1.
Clinical characteristics of the patients according to the first SBT outcome.
| First SBT (n=19) | p value | ||
|---|---|---|---|
| Successful (n=8) | Failed (n=11) | ||
| Age (years) | 74 ± 8 | 72 ± 9 | 0.6 |
| Females (%) | 2 (25) | 4 (36) | 0.9 |
| MIP (cmH2O) | −46 ± (−13) | −32 ± (−10) | 0.02 |
| Troponin (pg/ml)∗ | 432 ± 576 | 217 ± 268 | 0.36 |
| NT-proBNP (pg/ml)∗ | 1564 ± 862 | 7515 ± 13643 | 0.36 |
| Systolic BP (mmHg)∗ | 129 ± 25 | 123 ± 18 | 0.57 |
| Diastolic BP (mmHg)∗ | 63 ± 15 | 60 ± 15 | 0.59 |
| Heart rate (bpm)∗ | 91 ± 18 | 83 ± 15 | 0.31 |
| SaO2 (%)∗ | 99 ± 1 | 98 ± 1 | 0.69 |
| PaO2 (mmHg)∗ | 125 ± 26 | 132 ± 40 | 0.68 |
| PaCO2 (mmHg)∗ | 36 ± 5 | 38 ± 10 | 0.63 |
| pH∗ | 7.41 ± 0.02 | 7.42 ± 0.04 | 0.69 |
| ScvO2 (%)∗ | 66 ± 8 | 66 ± 7 | 0.9 |
| Hct (%) | 25.7 ± 3.7 | 28.8 ± 4.3 | 0.1 |
| 48-hour fluid balance (mL)∗ | 371 ± 1134 | 618 ± 1646 | 0.72 |
|
| |||
| No. of patients with | |||
| Ischemic heart disease, n (%) | 4 (50) | 9 (81) | 0.32 |
| Heart failure, n (%) | 4 (50) | 11 (100) | 0.02 |
| Hypertension, n (%) | 7 (88) | 11 (100) | 0.42 |
| Atrial fibrillation, n (%) | 3 (38) | 2 (18) | 0.62 |
| Diabetes mellitus, n (%) | 3 (38) | 4 (36) | 0.90 |
| Chronic kidney disease, n (%) | 3 (35) | 5 (45) | 0.90 |
| COPD, n (%) | 2 (25) | 3 (27) | 0.90 |
SBT, spontaneous breathing trial; MIP, maximum inspiratory pressure; BP, blood pressure; NT-proBNP, N-terminal probrain natriuretic peptide; bpm, beats per minute; SaO2, arterial oxygen saturation; PO2, arterial oxygen tension; PaCO2, arterial carbon dioxide tension; pH, arterial pH; ScvO2, central venous oxygen saturation; Hct, haematocrit; COPD, chronic obstructive pulmonary disease; (∗), before the start of the first SBT.