Lellouche 2006.
Methods | Multi‐centre randomized controlled trial | |
Participants | 147 adult patients (intervention 74: control 70) ventilated for ≥ 24 hours using an assisted mode screened for eligibility before usual criteria for weaning were present. Inclusion criteria were: pulse oximetry >90% with FiO2 ≤ 50% and PEEP ≤ 8 cmH2O, no need for epinephrine or norepinephrine at a rate > 1 mg/h, body temperature between 36 to 39 °C, and a stable neurological status with little or no sedation. Eligibility criteria included absence of: a do‐not‐resuscitate order, expected poor short‐term prognosis, tracheostomy, and cardiac arrest with poor neurological prognosis. Setting: 5 teaching hospital medical‐surgical ICUs in 4 countries in Europe (Belgium, Spain, France, Switzerland) |
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Interventions | Intervention: SmartCare/PS™ Control: Weaning according to local practice (guidelines [weaning protocols] were available in 4/5 ICUs). Ventilator settings were chosen by the physician in charge of the patient. Weaning comprised once daily or more screening for criteria to decide for a SBT (T‐piece or PSV ± PEEP). SBT could be performed as soon as criteria were present; after passing a SBT standard extubation criteria were used. |
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Outcomes | Time to successful extubation defined as the time from inclusion until successful extubation (followed by 72 hours without ventilator support) Total duration of ventilation Duration of ventilatory support until first extubation Length of ICU stay Length of hospital stay Number of complications in the ICU Number of cases of nosocomial pneumonia ICU mortality Hospital mortality |
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Notes | Proportion and time to satisfying extubation criteria not reported for usual care arm | |
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | Computer generated by blocks of six |
Allocation concealment (selection bias) | Low risk | Randomization was centralized, concealed and generated by electronic mail system |
Incomplete outcome data (attrition bias) All outcomes | Low risk | Attrition reported, analysis according to ITT, no missing outcome data |
Selective reporting (reporting bias) | Low risk | All pre‐specified outcomes are reported |
Other bias | Low risk | No other sources of bias detected |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Blinding of personnel not possible |
Blinding of outcome assessment (detection bias) All outcomes | Unclear risk | Unable to confirm if outcome assessors were involved in daily patient care |