Figure 5. .

Comparison of classic LMA (left side) versus i-gel (right side). Four beneficial features of i-gel not found in the classic LMA: (a) does not require air inflation to seal over the glottis; (b) tip does not flex forward or backward preventing seal over the glottis; (c) vents gastric pressure if prior bag mask ventilation has pressurized the stomach; and (d) has a bite block to prevent loss of airway if patient bites down during return to consciousness while still needing airway management and ventilation assistance.