Laryngeal Mask Types
1-LMA Classic Airway
The classic laryngeal mask airway
consists of a tube with an inflatable mask. The entire appliance is latex-free
with a silicone edge. The show is a flattened, pear-shaped inflatable armband
with an open front.
If positioned correctly, the opening
covers the glottis, the proximal end faces the base of the tongue, and the
distal edge wedges against the upper esophageal sphincter, forming a seal.
The classic laryngeal mask airway is autoclavable and reusable. Its full use has been estimated at Approximately 200 million patient services since its introduction into clinical practice.
2-Proseal airway laryngeal mask
The proseal laryngeal mask airway was launched in 2000 and is a modified version of the classic laryngeal mask airway.
In addition to the silicone rim intended to
seal around the larynx, the distal tip has an esophageal drainage port designed
to communicate with the gastrointestinal tract.
The port allows suction, potentially reducing
the risk of gastric content aspiration.
Its insertion time is slightly longer than the classic laryngeal mask airway, but it shows a 50%improvement in obtaining a proper seal.
If the device is placed too proximal or there
is a leak, the air is detected from the esophageal port.
Many unconventional techniques for proseal
laryngeal mask airway insertion have been described, offering options for
the operator when faced with a difficult airway in the adult or pediatric
population.
Potential problems may include poor position,
laryngeal edema, nine, and airway obstruction.
3-Laryngeal airway incubator mask, Fastrack
It is a modified version of the classic
laryngeal mask airway with the upper part of the tube removed. The remaining
line has a metal core with a handle used for positioning at its proximal end.
After establishing an airway with the intubating laryngeal mask airway, an endotracheal tube (ETT) can be inserted through the metal channel. It has been incorporated into complex airway management algorithms.It is easy to use and can save lives. In a study using manikin models, experienced and inexperienced operators achieved high first-attempt intubation success rates after a 60-second demonstration.
4-Disposable Laryngeal Airway Mask
5-LMA Flexible Airway
6-LMA® ProSeal™ Airway
7-LMA® Supreme™ Airway
LMA Supreme™ is a single use, second
generation, gastric access device which forms an effective First Seal™ with the
oropharynx (oropharyngeal seal) and an innovative Second Seal™ with the upper
oesophageal sphincter (the oesophageal seal).
The importance of the Second Seal™ (oesophageal
seal) is significant: it can minimise gastric insufflation and reduce the risk
of aspiration, giving you the confidence to go further with a laryngeal mask
airway.
