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Sizing the endotracheal tube

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During endotracheal intubation, typical adult sizes are 7 in a female and 8 in a male. In children, there is a formula for selecting the correct size tube: (the age of the child divided by four) plus four. More practically in an emergency, a tube the size of the nostril or little finger is usually adequate.

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The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

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