Dexmedetomidine as a bridge for the severely agitated adolescent

Design

single-centre retrospective case series over 16 months, no comparator group

Population

20 adolescents aged 12 to 17 with severe agitation awaiting psychiatric treatment and disposition, median age 15

Primary outcome

need for additional sedation despite dexmedetomidine infusion

Effect

9 of 20 (45%, 95% CI 26% to 66%) needed more sedation; median infusion 21 h, median maximum 1.6 mcg/kg/hr; 5 transferred to paediatric ICU

A single Italian emergency department reviewed 16 months of practice in which adolescents aged 12 to 17 with severe agitation, waiting for psychiatric assessment and a bed, were given a dexmedetomidine infusion rather than repeated boluses of other sedatives. Twenty patients qualified, median age 15. Median infusion duration was 21 hours at a median maximum dose of 1.6 mcg/kg/hr.

The primary outcome was whether dexmedetomidine alone held: it did not in 9 of 20 (45%, 95% CI 26% to 66%). One patient desaturated, corrected by head repositioning and supplemental oxygen. Five were transferred to paediatric intensive care because they needed multiple sedatives.

This is a retrospective series of twenty patients with no comparator, so it establishes feasibility and nothing about efficacy or relative safety. Its real interest is the problem it describes: an adolescent held in an emergency department for the best part of a day awaiting a psychiatric bed, sedated because there is nowhere else for them to be. A twenty-one hour infusion is a service failure being managed pharmacologically, and any department considering this should count the boarding time as the outcome that matters alongside the sedation.

• Treat this as feasibility data only — twenty patients, retrospective, no control group
• Expect roughly half to need additional sedation despite the infusion
• Continuous respiratory monitoring is required; the one desaturation here was picked up and reversed simply
• Have an escalation route agreed in advance — a quarter of this series needed paediatric intensive care
• Audit boarding time for adolescent mental health presentations alongside any sedation protocol

The statistics, in plain English

With 20 patients, the 45% needing extra sedation carries a confidence interval from 26% to 66% — the true rate could be a quarter or two-thirds, and the study cannot narrow it further. A single desaturation in 20 patients tells you almost nothing about how common that complication is; the interval around a 1-in-20 event extends well past 20%. Uncontrolled series like this cannot show whether outcomes were better than they would have been with the department's usual approach.

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