LandmarkRCT

SEDCOM

Dexmedetomidine vs Midazolam for Sedation of Critically Ill Patients

JAMA, 2009 · Prospective, multicenter, double-blind randomized controlled trial

Clinical question

How does dexmedetomidine compare with midazolam for prolonged sedation in mechanically ventilated ICU adults?

Population: 375 mechanically ventilated medical/surgical ICU adults expected to require ventilation for more than 24 hours.
Inclusion criteria: Adult ICU patient
Mechanical ventilation
Expected sedation >24 hours
Intervention: Dexmedetomidine-based sedation.
Comparator: Midazolam-based sedation.
Primary outcome: Time within the targeted sedation range.
Secondary outcomes: Delirium prevalence
Duration of mechanical ventilation
Adverse effects
Result: Sedation-target achievement was similar; dexmedetomidine was associated with less delirium and shorter ventilation, with more bradycardia.

What the trial found

Dexmedetomidine did not improve time at target sedation but reduced delirium prevalence and ventilation duration compared with midazolam.

Current guideline position

Consistent with modern PADIS guidance favoring non-benzodiazepine strategies and the 2025 focused update in selected patients.

Clinical interpretation

Supports non-benzodiazepine sedation strategies when light, interactive sedation and delirium reduction are priorities.

Limitations

High certainty

Clinical Context & Relevant Topics (1)

Disease Reference

Analgesia-first sedation, light sedation targets, ABCDEF bundle, spontaneous breathing trials, and non-pharmacologic delirium mitigation.