Silicone laryngeal mask with gastric lumen is a Second Generation Supraglottic Airway (SGA) Devices.
There are several distinct advantages when electing to use an Double Lumen LMA:
1The hands can be freed for other tasks.
2It can be used as a bridge to intubation in the case of an unanticipated difficult airway in the operating room, the general hospital, and even in the pre-hospital setting. It serves as a good "rescue device" in the "can't intubate/can't ventilate" patient.
3 One potential example of the latter is the morbidly obese patient. Combes et al found that the intubating LMA was easier to insert in obese vs lean patients.
4 Additionally, these researchers found that failed blind tracheal intubation attempts and airway adjustment maneuvers were decreased when the intubating LMA was used in obese patients.
5 There are several additional advantages. The LMA can be inserted blindly. However, this is also a disadvantage because one cannot see where it is going or whether it is being placed properly. It is a very forgiving device because poor or incorrect use can still result in reasonable function.
6 Finally, it does not compromise the function of the larynx as with an endotracheal tube.