Chang CH et al. – The trapezius squeezing test is a superior indicator of an adequate condition for laryngeal mask airway (LMA) insertion compared to the jaw thrust maneuver in adults under sevoflurane anesthesia.Methods
- One hundred adult patients of ASA physical status 1 or 2 undergoing minor surgical procedures were randomly allocated to the T (trapezius squeezing, n=50) group or the J (jaw thrust, n=50) group.
- The LMA was inserted immediately after the loss of response to trapezius squeezing or jaw thrust.
- Successful and unsuccessful attempts were recorded.
- An unsuccessful attempt was defined as the occurrence of coughing, gagging, gross purposeful movements, breath-holding, laryngospasm, or an SpO2<90% during LMA insertion.
- Insertion time, end-tidal sevoflurane concentration, mean arterial pressure, and heart rate were recorded.
- The incidence of successful attempts was significantly higher in the T than in the J group (48/50 vs. 36/50, respectively).