Comparing the Efficiency of Laryngeal Mask Airway andEndotracheal Tube Insertion in Airway Management in Patients Planning for Elective Orthopedic Surgery under General Anesthesia: A Randomized Clinical Trial

Objectives: the present study compared respiratory parameters between the two methods of airway establishment, ett and lma, for patients scheduled for orthopedic surgery with general anesthesia. methods: this randomized double-blinded clinical trial was conducted on patients scheduled for elective orthopedic surgery under general anesthesia, in bandar abbas, iran, from january 2021 to december 2021. using a random allocation table, the study participants were randomly divided into two groups, to employ either ett (n=48) or lma insertion (n=48). the study’s ultimate goal was to assess the respiratory parameters in 1, 3, 5, 10, and 15 minutes following intubation. results: at all-time points, the average of peak airway pressure (p peak) and p plateau parameters in the ett group was much higher than the ema group (p<0.001 in all comparisons). the value of dynamic lung compliance in the lma group was significantly higher than the ett group in all considered time periods (p<0.001 in all comparisons). the upward trend in the value of this index was significant only in the lma group (p=0.030). there were no significant differences in arterial oxygen saturation and end-tidal carbon dioxide levels between the two groups (p>0.05). conclusion: in terms of arterial oxygen saturation stability and at the same time providing respiratory dynamic compliance, the lma device outperformed the ett.