Page 44 - CASA Bulletin of Anesthesiology 2022; 9(2) (5)

CASA Bulletin of Anesthesiology

Table 1: Evolution of the Laryngeal Mask Airway (LMA) 1, 6 *

Name Type Image Material Advantages Disadvantages
LMA First generation Silicone Original design, less Low OSP, increased
†
Classic pharyngolaryngeal trauma, cost with processing
respiratory problems vs.
ETT, rescue device

LMA First generation Polyvinyl Disposable form of Low OSP
Unique chloride classical LMA

LMA Polyvinyl Intubating LMA to guide Bulky,
Fastrach chloride blind, difficult
and silicone no pediatric sizes,
intubations increased cost of
processing

LMA Polyvinyl Wire-reinforced tubing, Low OSP, increased
Flexible chloride head and neck procedures cost with processing
and silicone

LMA Second generation Silicone Gastric suction port, built Bulky, folding of
ProSeal in bite block, high OSP mask can obstruct the
gastric port, increased
cost of processing

LMA Second generation. Polyvinyl Disposable version of Bulky, folding of
Supreme chloride ProSeal LMA mask can obstruct the
gastric port

*More supraglottic devices exist. This table includes first- and second-generation devices discussed in the review.
†OSP: oropharyngeal seal pressure. Lower OSP increases gastric insufflation and risk of aspiration.
1
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