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In Reply.—We appreciate the opportunity to respond to Ferrari and Cunningham. They are absolutely correct. The formula was incorrectly listed as endotracheal tube size is (age plus 26/4); the correct formula is endotracheal tube size is (age plus (16/4). We thank Ferrari and Cunningham for their comments.
SEID AB. Determination of Endotracheal Tube Size in Pediatric Patients-Reply. Arch Otolaryngol Head Neck Surg. 1992;118(4):449. doi:10.1001/archotol.1992.01880040116025
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