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Table 2 Recommended LMA sizing

From: The management of unanticipated difficult airways in children of all age groups in anaesthetic practice - the position paper of an expert panel

Patient size

LMA size

Neonate, infant < 5 kg

1

Infant 5–10 kg

1.5

Infant, child 10–20 kg

2

Child 20–30 kg

2.5

Child 30–50 kg

3

Child /Adult 50–70 kg

4.0

Child / Adult 70–100 kg

5