Efficacy of dexmedetomidine infusion in patients undergoing tympanoplasty surgery under local anaesthesia
Journal Title: Medpulse International Journal of Anesthesiology - Year 2017, Vol 2, Issue 2
Abstract
Background: Tympanoplasty is done under local anaesthesia using a microscope and require good surgical field visibility. Dexmedetomidine is a highly selective α2 adrenergic agonist used for analgesia and sedation, sympatholytic and hemodynamically stabilizing properties.In the present study, the dexmedetomidine infusion was used to evaluate the efficacyin patients undergoing tympanoplasty surgery under local anaesthesia. Material and Methods: 32 adult patients of ASA physical status I and II of both genders scheduled for elective middle ear surgery were enrolled for this prospective study. Dexmedetomidine bolus dose was 1 μg/kg diluted in normal saline solution and the maintenance dose 0.5 μg/kg/h was used. Local anesthesia was given using 10–15 ml of lidocaine 2% with adrenaline 1/200,000 to block auricular and auriculotemporal nerves. Pentazocine was used as rescue analgesic. During procedure the bleeding at surgical site and quality of anaesthesia was assessed. Results: Grade I minimum bleeding at surgical site was observed in 26 patients and none of the patients had bleeding of Grade III troublesome bleeding. Rescue LA infiltration was required only in 2 patients and rescue analgesics in intraoperative period was required in only 3 patients. Mean VAS Score in postoperative period was found to be 7.212±0.59. Hypotension (8/32), bradycardia (6/32) and dry mouth (3/32) were observed as complications. Quality of anaesthesia was excellent in 26 patients. Discussion: Dexmedetomidine infusion was safe to provide oligaemic surgical field for better visualization under operating microscope for tympanoplasty surgery under local anaesthesia.
Authors and Affiliations
Shubhada Anand Patil, Madhuri Pramod Lonikar, Mohd. Imran Haroon
Keywords
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