This review examines methods for determining endotracheal tube size in children, suggesting implications for clinical practice.
Pediatric airways grow along with the patient, so selection of tube size must be tailored to the patient’s age and size. Broselow tape or other weight-based pediatric resuscitation tools also have estimated ETT sizes but may not always be available. Multiple formulae have been proposed for pediatric ETT size selection, with (age/4) + 3.5 being the most widely used for cuffed tubes.
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Derek Tam (2026) studied this question.
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