Performance of the Size 5 Laryngeal Mask Airway in Males and Females

We compare the functional performance (ease of insertion, oropharyngeal leak pressure and anatomic position) of the size 5 LMA in males and females over a range of cuff volumes. We also determine 1) if age, height, weight and body mass index predict functional performance and 2) the relationship between oropharyngeal leak pressure (OLP) and anatomic position (judged by fibreoptic scoring). One hundred male and one hundred female paralysed, anaesthetised patients were studied. The number of insertion attempts and time to placement were recorded. OLP and fibreoptic score (FOS) were measured during inflation of the…