ArticleJournal of perinatology : official journal of the California Perinatal Association2020
Nasal-tragus length for estimating optimal insertion depth of endotracheal tube in Thai neonates.
Article in Journal of perinatology : official journal of the California Perinatal Association, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
4 citing papers in PubMed, 8 citations in OpenAlex.
- Standard Nasal-Tragus Length Formula Versus Alternate Insertional Length Formula for Optimal Placement of Endotracheal Tube in Neonates: A Randomized Controlled Trial (SNAIL Trial).Indian pediatrics · 2026Trial
- Article
- 'Lip-to-Tip' study: comparison of three methods to determine optimal insertion length of endotracheal tube in neonates.European journal of pediatrics · 2021Observational
- Comparisons and Refinements of Neonatal Oro-Tracheal Intubation Length Estimation Methods in Taiwanese Neonates.Frontiers in pediatrics · 2020Article
Corrections and comments
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveTo develop a nasal-tragus length (NTL)-based table for estimating the endotracheal tube (ETT) insertion depth. STUDY
designA prospective study of 110 Thai neonates was conducted in a NICU in Bangkok, Thailand. The correlation between the optimal insertion depth (Opt-Depth) and NTL was determined, and then an NTL-based table for estimating ETT depth was developed. The accuracy of using various methods in estimating ETT depth was compared.
resultsA strong correlation between Opt-Depth and NTL was found (r = 0.897, p < 0.001). There was no significant difference between ETT depth estimated by the NTL-based table and Opt-Depth [mean difference (95% CI) -0.75 (-12.11 to 10.61) mm, p = 0.22]. The accuracies of using NTL + 1, NTL-based, GA-based, and BW-based tables for estimating ETT depth were 32.7%, 55.5%, 61.8%, and 52.7%, respectively.
conclusionOur NTL-based table for estimating the ETT depth had an acceptable accuracy while using "NTL + 1" resulted in overestimating ETT depth.
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Registered trials
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