A prospective, randomized and double blinded clinical comparative study to evaluate dexmedetomidine and nitro-glycerine for controlled hypotensive anaesthesia elective spine surgeries

Aim: To compare the efficacy of and safety of dexmeditomidine versus nitroglycerine during hypotensive anaesthesia induced by either drug in adult patients posted for elective spine surgeries. Material and Methods: This was a prospective, randomized, and double blinded clinical comparative study conducted in the Department of Anaesthesiology, ESIC Medical College, Sanath Nagar, Hyderabad, Telangana, India for the period of 1 year. 100 participants belonging to ASA class I or II between 20 and 55 years of age scheduled for elective spine surgeries were include in this study. The study drug dexmeditomidine was given to group DX in the dose of 1 micro gram/kg body weight in a 600 seconds infusion before induction diluted to 10 ml with normal saline followed by maintenance dose at infusion rate of 0.2- 0.7 microgm/kg. The group NG received 10 ml plain normal saline over 600 seconds before induction followed by maintenance dose of nitroglycerine at an infusion rate of 0.5-10 microgm/kg/min. different parameter were compared in both the groups.