What should be the size of an LMA for a patient weighing 85 kilograms?

In determining the appropriate size of a Laryngeal Mask Airway (LMA) for an adult patient weighing 85 kilograms, the sizing guidelines suggest that an LMA size 4 is typically recommended for adults weighing between 50 to 70 kilograms, while a size 5 is suitable for those weighing between 70 to 100 kilograms.

Given that the patient is 85 kilograms, a size 5 would provide optimal fit and effectiveness for airway management. Sizing an LMA correctly is crucial since using the right size ensures effective ventilation and minimizes the risk of complications such as airway obstruction or injury. Therefore, for a patient weighing 85 kilograms, a size 5 LMA would be the most appropriate choice for achieving secure airway control.