Comparison of outcome of laryngeal mask airway (LMA classic) and I-gel devices in patients undergoing general anaesthesia in elective surgeries

Background: supraglottic airway devices (sads) have been used widely since 1990s. all supraglottic airway devices are designed to form a seal in the pharynx between the respiratory and digestive tract to protect the airway and facilitate gas exchange. aim: to compare the safety of laryngeal mask airway (lma classic) and i-gel devices,regarding blood on removal of devices and post-operative nausea and vomiting. methods: this was a randomized controlled trial. total 200 patients undergoing elective surgical procedure were included and divided into two equal groups a and b by using random number table. each group comprised of 100 patients. in group a lma and in group b i-gel was used. following,preoxygenation with 100% oxygen,patients were induced with propofol 2.5mg/kg,nalbuphine 0.1mg/kg and atracurium 0.5 mg/kg iv to insert device. standard ii monitoring was applied to all patients. anaesthesia was maintained with 50% n2o in o2 and isoflurane at 1.2 mac. at the end of surgery neuromuscular blockade was reversed with neostigmine and atropine. devices were removed and monitored the patients in recovery room for 24 hours. all data was entered and analyzed by spss version 11. chi square test was applied. p-value of ≤ 0.05 was considered significant. conclusion: i-gel is found to be more advantageous.