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Alpha-2 Adrenoceptor Agonist — Sedative/Analgesic

Dexmedetomidine (Burns ICU Sedation)

Brand names: Dexdor, Precedex (US)

Dexmedetomidine is a selective alpha-2 adrenergic agonist used for sedation of mechanically ventilated and critically ill burns patients in intensive care, providing cooperative sedation with analgesic sparing.

Dosing — being independently re-sourced

ClinCalc Pro is rebuilding its dose data from primary open sources — the manufacturer SmPC (eMC), the WHO Model Formulary and other official references — under clinician review. This drug's structured dose is not yet published here. Confirm all doses against the product SmPC and your local formulary before prescribing.

Clinical monograph

How it works

By stimulating central alpha-2 receptors it reduces noradrenergic outflow, producing sedation and analgesia without significant respiratory depression.

Prescribing in practice

  • It commonly causes dose-related bradycardia and hypotension, and rapid loading or boluses can precipitate marked haemodynamic instability.
  • It does not reliably provide amnesia or deep sedation alone, so it is unsuitable as the sole agent where deep sedation is required.
  • Abrupt withdrawal after prolonged infusion can cause rebound hypertension and agitation, so it should be tapered.

Monitoring

Monitor heart rate, blood pressure, and depth of sedation continuously during the infusion.

Counselling the patient

  • This sedative keeps you comfortable and calm while breathing support is needed, without strongly suppressing breathing.
  • The team will watch your heart rate and blood pressure closely throughout.

Evidence & guidelines

Dexmedetomidine is supported for ICU sedation, with trials indicating it facilitates lighter, more interactive sedation compared with some alternative agents.

Reference: MHRA Approval Dexdor (2011); MENDS Trial (Pandharipande et al. NEJM 2007); PRODEX Trial (Jakob et al. NEJM 2012); British Burns Association ICU Guidelines; Drug verified in RxNorm (NLM); confirm dosing against the manufacturer SPC (eMC). Verify against your local formulary and current prescribing references before prescribing. Monograph status: clinician-reviewed (2026-07-04).

Related

Curated clinical cross-links plus same-class fallbacks.

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