Dexmedetomidine infusion during middle ear surgery under general anaesthesia to provide oligaemic surgical field: prospective study

Dr. J. Ishwarya; Dr. G. Balaji

Volume : X, Issue : II, February - 2020

Dexmedetomidine infusion during middle ear surgery under general anaesthesia to provide oligaemic surgical field: prospective study

Dr. J. Ishwarya, Dr. G. Balaji

Abstract :

As ENT surgeries are done in a small working space on small structures which needs a bloodless field or field with minimum bleeding. This can reduce the duration of surgery and can give better results. So, bloodless field can be achieved with various methods. In our study, we tried dexmedetomidine to control intra operative blood pressure which in turn can reduce the amount of blood loss and can give a clear field for surgery. Excessive reduction in blood pressure can cause adverse effects hence, careful monitoring is needed. A total of 60 subjects were selected and randomized into two groups namely DEX and NS with 30 in each group. DEX group subjects were given received infusion of dexmedetomidine 0.5 mcg/kg/hour after induction of anaesthesia till 20 minutes before completion of surgery. NS group received placebo infusion of normal saline 100 ml after induction of anaesthesia till 20 minutes before completion of surgery. Inter operative bleeding was graded with grading scale. Results were analyzed using suitable statistical tools and the results showed a better heart rate, systolic, diastolic and mean arterial pressure control, less bleeding during surgery with better surgical field, reduce duration of surgery, less sevoflurane requirement in DEX group.