What are the sizes of laryngeal mask airways (LMAs)?

Updated: Dec 28, 2018
  • Author: Nichole Bosson, MD; Chief Editor: Guy W Soo Hoo, MD, MPH  more...
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Answer

Answer

A table showing laryngeal mask airway size based on patient weight is included below.

Table. Laryngeal Mask Airway Size Based on Patient Weight (Open Table in a new window)

Weight, kg

Mask Size

Max Cuff Volume, mL

LMA Models

<5

1

4

Classic, Unique

5-10

1.5

7

Classic, Unique

10-20

2

10

Classic, Unique

20-30

2.5

14

Classic, Unique

30-50

3

20

Classic, Unique, Fastrach

50-70

4

30

Classic, Unique, Fastrach

70-100

5

40

Classic, Unique, Fastrach

>100

6

50

Classic


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