Use of dexemditomidine: (A) Prolong action of LA in hypeensive patients, (B) Sedative agent for intubated patients, (C) Increases bioavailability of regional anaesthetic drug, (D) Helps in reducing bispictral index of general anaesthetic drug with low potency
Answer is B. 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 Mikhail's Clinical Anaesthesiology, 5th edition, pg no. 288)