Optimal nasotracheal tube insertion depth in neonates

In this large prospective cohort, body weight at the time of intubation was confirmed as the most reliable single predictor of optimal nasotracheal endotracheal tube insertion depth in neonates. Our findings support established reference ranges and provide quantitative confirmation across a broad spectrum of gestational ages and body weights. By translating these data into a concise, evidence-based bedside chart and a complementary digital reference, this study strengthens confidence in existing recommendations and supports standardized clinical practice, while emphasizing the need for clinical judgement and post-intubation verification.