Entry criteria | |
 SpO2 | ≥ 94% with FiO2 ≤ 0.5, PEEP ≤ 7 cmH2O, support of WOB ≤ 40% |
 PaO2 | ≥ 70 mmHg |
 Respiratory acidosis | No acidosis |
 Heart rate | ≤ 120 bpm |
 Dopamine | ≤ 5 mcg/kg/min |
 Dobutamine | ≤ 5 mcg/kg/min |
 Noradrenaline | ≤ 0.05 mcg/kg/min |
 Hemoglobin | ≥ 8 g/dl |
 Electrolyte abnormality | No abnormality |
Extubation criteria | |
 Consciousness | |
  Richmond Agitation-Sedation Scale | − 2 to 0 |
  Confusion assessment method for the ICU | Negative |
 Respiration | |
  Respiratory rate | ≤ 30/min |
  RSBI | < 105 |
  Labored breathing | No |
  Increased WOB | No |
 Gas exchange | |
  SpO2 | ≥ 94% |
  PaO2 | ≥ 70 mmHg |
  pH | ≥ 7.32 |
  PaCO2 | ≤ 45 mmHg |
 Circulation | |
  Heart rate | ≤ 120/min |
  Systolic blood pressure | 80 to 180 mmHg |