<prompt> Use of dexemditomidineProlong action of LA in hypeensive patientsSedative agent for intubated patientsIncreases bioavailability of regional anaesthetic drugHelps in reducing bispictral index of general anaesthetic drug with low potency  <response>: DexmedetomidineIt is a centrally acting a-2 adrenergic agonistIt is approved by f.D.A for sho-term 24 hours continuous IV sedation of adults who are tracheally intubatedIts use as an anaesthetic agent is not recommended but it is useful in patients with brain injury and ongoing sedation needs.Refer: Morgan and Mikhails Clinical Anaesthesiology, 5th edition, pg no. 288 