Dexmedetomidine vs midazolam

An industry-sponsored double-blind randomised controlled trial comparing midazolam with the central alpha-2 agonist dexmedetomidine showed the newer drug to provide similar levels of sedation with less delirium and a shorter time to extubation. It was associated with more episodes of bradycardia not requiring intervention.
This new sedative drug, related to clonidine, provides some analgesia and anxiolysis, and is noted for its lack of respiratory depression. An accompanying editorial points out the known association between benzodiazepines and delirium, and asks whether a comparison with propofol would have shown the same improved outcomes.
Dexmedetomidine vs midazolam for sedation of critically ill patients: a randomized trial
JAMA. 2009 Feb 4;301(5):542-4

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