- Design
- Cochrane systematic review and meta-analysis of 23 RCTs
- Population
- About 5,987 ventilated critically ill adults and children
- Primary outcome
- Duration of ventilation, mortality, ICU length of stay
- Effect
- Mortality RR 0.88 (95% CI 0.77-0.99); tracheostomy RR 0.68 (0.55-0.85)
This Cochrane review update pooled 23 randomised trials of daily sedation interruption in mechanically ventilated, critically ill patients: 18 trials in adults and five in children, nearly 6,000 participants. Comparators were protocolised sedation, usual clinician-led sedation, or analgesia-first approaches.
Daily interruption probably reduced mortality (RR 0.88, 95% CI 0.77 to 0.99; moderate certainty, I-squared 0%), ICU and hospital stay (each about 11% shorter), and tracheostomy (RR 0.68, 0.55 to 0.85). It may have shortened ventilation by about 14%, at low certainty because trials varied a lot. Accidental extubation and line removal did not clearly increase. Total opioid doses probably rose slightly, and effects on delirium were very uncertain.
For emergency and ICU teams, including Indian units where nurse staffing for close sedation titration varies, a scheduled daily pause is a simple, low-cost default. It requires a safety screen first and someone present when the patient wakes. It overlaps with, rather than replaces, light-sedation targets and spontaneous breathing trials.
- Build a daily sedation interruption into the ventilated patient's routine, with a safety screen first.
- Exclude patients with active seizures, raised intracranial pressure, neuromuscular blockade or high sedative needs.
- Have a nurse at the bedside during the interruption.
- Pair it with a spontaneous breathing trial where the patient qualifies.
- Watch opioid totals, which rose slightly in the trials.
Why it matters
A free, protocol-level change is linked to fewer deaths and tracheostomies without more accidental extubations.
Don't overread it
The mortality result is moderate certainty, and the ventilation-time benefit is low certainty because trials differed widely.
The statistics, in plain English
An RR of 0.88 means about a 12% relative reduction in death, with an interval that just excludes no effect (0.99). The ventilation-time result has an I-squared of 88%, meaning trials disagreed a great deal, which is why certainty was rated low.
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