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Background
Appropriate management of the endotracheal tube (ETT) insertion depth is important. The depth calculated using Tochen’s formula is overestimated in extremely‐low‐ birthweight infants, particularly those with a birthweight <750 g. Gestational age has been shown to be particularly useful in the Neonatal Resuscitation Program, 7th edition.5 However, a randomized trial for estimating the...
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