The Laryngeal Mask Airway (LMA) comes in a variety of sizes for different patients.
|
LMA Size |
Patient |
Body Weight |
|
1.0 |
newborn |
<= 5 kg |
|
1.5 |
infant |
5 - 10 kg |
|
2.0 |
large infant or child |
10 - 20 kg |
|
2.5 |
child |
20 - 30 kg |
|
3.0 |
large child or small adult |
30 - 50 kg |
|
4.0 |
average adult |
50 - 70 kg |
|
5.0 |
large adult |
70 - 100 kg |
|
6.0 |
very large adult |
> 100 kg |
|
LMA Size |
Endotracheal Tube Internal Diameter |
Cuff Volume in mL |
|
1.0 |
3.5 mm |
4 |
|
1.5 |
4.0 mm |
7 |
|
2.0 |
4.5 mm |
10 |
|
2.5 |
5.0 mm |
14 |
|
3.0 |
6.0 mm |
20 |
|
4.0 |
6.0 mm |
30 |
|
5.0 |
7.0 mm |
40 |
|
6.0 |
? 7.5 - 8.0 mm |
50 |
where:
• The internal ETT size for LMA size 6.0 was not in the table from . The value entered is the next larger Jackson size after 7.0 mm.
