ICU sedation, delirium & recovery

Dexmedetomidine for treatment of hyperactive delirium in non-intubated intensive care unit (ICU) patients: the 4D randomized clinical trial

Intensive Care MedPublished Randomised controlled trial

  • stopped for efficacy at preplanned interim analysis
  • Stopped for efficacy at the preplanned interim analysis

Authors' conclusion

In non-intubated adult ICU patients with hyperactive delirium, the use of dexmedetomidine was associated with a greater clinical benefit than placebo for the joint modelling of multiple endpoints of agitation control, delirium resolution, and intubation with mechanical ventilation.

Study context

Population
Non-intubated critically ill adults with hyperactive delirium in 9 ICUsincluded in final analysis
Participants
151 adults
Comparison
Dexmedetomidine vs placebo continuous IV infusion for at least 36 h
Primary endpoint
Joint modelling of agitation duration (RASS +1 or higher), delirium duration, or need for intubation and deep sedation
Methodological detailsmulticentre, double-blind, placebo-controlled, two-arm, investigator-initiated, Enrollment December 2017 to February 2022; final follow-up February 2023
  • Multicentre
  • Double-blind
  • Placebo-controlled
  • Two-arm
  • Investigator-initiated
  • Enrollment December 2017 to February 2022; final follow-up February 2023

Primary result

As reported in the abstract

Joint model of agitation duration, delirium duration, or need for intubation and deep sedation

Between-group difference in the primary outcome statistically significant

−30 points

median difference, −30 points; 95% CI, - 49 to - 12p = 0.001

Secondary outcomes

Agitation duration · spread kind not named in abstract

absolute difference (hours) - 1.0 (- 2.0 to - 0.1)

OutcomeES (95% CI)P value
Agitation durationSpread kind not named in abstract- 0.60 (−0.92 to −0.27)P = 0.001

Other key secondary outcomes (complications, ICU LOS, death)

Similar between groups

Safety

Complications (e.g. bradycardia or hypotension)

Similar between groups

Original publication

Dexmedetomidine for treatment of hyperactive delirium in non-intubated ICU patients: the 4D randomized clinical trial. Intensive Care Med. Published 29 October 2025. doi:10.1007/s00134-025-08135-1

Composed by AI from the published abstract and checked against it. How Briefs are made →

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