Laryngeal Mask Airway (LMA)

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LMA Sizes

Mask Size Weight (kg) Age (yr) LMA Length (cm) LMA Cuff Vol (mL) Largest ETT^ (mm)
1 <5 <0.5 10 4 3.5
1.5 5-10 <1 10 5-7 4
2 6.5-20 1-5 11.5 7-10 4.5
2.5 20-30 5-10 12.5 14 5
3 30-60 10-15 19 15-20 6
4 60-80 >15 19 25-30 6.5
5 >80 >15 19 30-40 7

^Largest ETT that can pass thorough "Intubating LMA" (ILMA)

See Also

References