Laryngeal Mask Airway (LMA)

Last updated 20.09.12

 

Index

 

Features

-  Supraglotic artificial airway support

-  Does not protect from aspiration

-  Much easier to insert than ETT (intubation)

-  Supports artifical & spontaneous ventilation

-  Types

-  Supreme: curved, bite block, drain

-  Proseals: higher seal pressures, drain

-  Fastrach: rigid handles, allows intubation

-  Classic: no drain

 

 

 

Rationale

-  Provision of airway in pts undergoing GA wo neuromuscular blocker (paralysis)

 

Sizing

-  0: infant

-  1: <5kg

-  1.5: 5-10kg

-  2: 5-10kg

-  2.5: 20-30kg

-  3: 30kg to small adult

-  4: adult

-  5: large adult

 

Procedure

-  Deflate cuff

-  Apply lubricant to LMA

-  Extend head & neck & maintain position w left hand

-  Hold LMA in right hand like pen w index finger at base of mask

-  Insert LMA along hard & soft palatte following curve of pharynx

-  May feel slight pop when LMA sits in place

-  Hold tube w left hand

-  Inflate cuff

-  Confirm placement: misting, rise & fall of chest, air entry

-  Secure tube to pt

-  Removal

-  Deflate cuff

-  Remove tape

-  Follow curve of tongue

-  Early (before reflexes return) or late (once conscious) removal