What size endotracheal tube?
Anaesthesia News
MAY 4, 2025
For Adults: Women: Typically, a 7.0-8.0 mm internal diameter (ID) tube is used. Men: Usually, an 8.0-8.5 mm internal diameter tube is appropriate. For Children: Neonates (birth to 1 month): 3.0-3.5 mm ID. Infants (1 month to 1 year): 3.5-4.0 mm ID. Toddlers (1-3 years): 4.0-5.0 mm ID. Preschoolers (3-5 years): 5.0-6.0 mm ID. School-age children (6-12 years): 6.0-7.0 mm ID.
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