Aim of this trial is to study the effect of Dexmedetomidine on post-operative blood pressure in patients undergoing brain arteriovenous malformation embolization. The patients were randomized allocated to either Dexmedetomidine group or Control group according to a random number. Patients in Dexmedetomidine group will receive intravenous Dexmedetomidine while the control group will receive normal saline. Post-operative anti-hypertensive drug, Visual analogue score,post-operative analgesics consumption, Quality of Recovery score-15 items, Ramsay score, and adverse events were recorded.