Prospective Validation of a Length-Based Nasotracheal Intubation Depth Table (“Hamburg NNTT Table”) in Neonates
Year: 2026
Type: article
Abstract: Introduction: Accurate endotracheal tube (ETT) placement is crucial for safe ventilation in neonates. Traditional formulas based on weight or gestational age often yield suboptimal accuracy. The length-based “Hamburg Neonatal Nasotracheal Tube Table” (Hamburg NNTT Table) was proposed to improve precision. This study aimed to evaluate the clinical applicability and accuracy of the Hamburg NNTT Table in a tertiary neonatal intensive care unit. Method: In this prospective single-center study, 72 neonates (58 preterm, 14 term) requiring nasotracheal intubation were enrolled. Crown-heel length was measured, and ETT depth determined according to the Hamburg NNTT Table. Correct placement was defined radiographically as the ETT tip in the middle third of the trachea. Results: Correct positioning occurred in 90.3% of cases. Accuracy was lower in extremely preterm infants (<28 weeks; 80.6%) compared to older infants (97.6%; p = 0.016). Conclusion: The Hamburg NNTT Table provides a simple and accurate method for neonatal nasotracheal tube placement, though refinement is warranted in extremely preterm infants.
Source: Maternal and Children s Health
DOI: 10.1159/000551926
Language: English
Subfield: Anesthesiology and Pain Medicine
Field: Medicine
Domain: Health Sciences
Open Access status: diamond
OpenAlex ID: W7153228636