{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,10]],"date-time":"2026-10-10T16:50:03Z","timestamp":1791651003627,"version":"4.3.4"},"reference-count":0,"publisher":"S. Karger AG","license":[{"start":{"date-parts":[[2026,10,10]],"date-time":"2026-10-10T00:00:00Z","timestamp":1791590400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,10,10]],"date-time":"2026-10-10T00:00:00Z","timestamp":1791590400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Neonatology"],"abstract":"<jats:p>Introduction: Various recommendations have been proposed to estimate the proper orotracheal tube insertion depth (Pro-depth). This study aimed to compare the performance of two modified nasal\u2013tragus length (NTL)-based methods\u2014the NTL-based table (T-method) and a modified NTL-based formula (F-method: NTL + 1 cm for NTL \u2264 6.5 cm and NTL + 0.5 cm for NTL &gt; 6.5 cm)\u2014for estimating Pro-depth in Thai neonates. Methods: In this randomized controlled trial, Thai neonates undergoing orotracheal intubation were assigned to either method. Estimated insertion depth was compared with radiographically determined Pro-depth. Accuracy and short-term respiratory complications, including bronchial intubation, atelectasis, and unplanned extubation, were compared between groups. Results: Thirty-nine and forty-four neonates were allocated to the T-method and F-method groups, respectively. Both methods demonstrated strong correlations with Pro-depth (r = .87 vs .92, p = 0.305). The T-method slightly underestimated depth, whereas the F-method slightly overestimated depth (\u22120.03 \u00b1 0.65 cm vs 0.11 \u00b1 0.62 cm, p = .314). The F-method showed a higher rate of optimal ETT placement within the mid-intrathoracic target zone (49% vs 61%, p = .247), with no significant difference in short-term respiratory complications. Conclusion: Both modified NTL-based methods demonstrated comparable accuracy and safety in Thai neonates. The F-method showed a trend toward improved optimal positioning within the mid-intrathoracic trachea, although the difference did not reach statistical significance. Radiographic confirmation remains essential to minimize the risk of clinically significant complications.<\/jats:p>","DOI":"10.1159\/neo\/adsag020","type":"journal-article","created":{"date-parts":[[2026,10,4]],"date-time":"2026-10-04T11:27:17Z","timestamp":1791113237000},"source":"Crossref","is-referenced-by-count":0,"title":["Comparison of Two Modified Nasal-Tragus Length Methods for Estimating Orotracheal Tube Depth in Thai Neonates: A Randomized Controlled Trial"],"prefix":"10.1159","author":[{"given":"Sopitsakarn","family":"Jaimuang","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wipawee","family":"Morakote","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Varangthip","family":"Khuwuthayakorn","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shanika","family":"Kosarat","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Maillika","family":"Pomrop","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Satit","family":"Manopunya","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"127","published-online":{"date-parts":[[2026,10,10]]},"container-title":["Neonatology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/karger.com\/article-pdf\/doi\/10.1159\/neo\/adsag020","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,10,10]],"date-time":"2026-10-10T16:01:45Z","timestamp":1791648105000},"score":1,"resource":{"primary":{"URL":"https:\/\/karger.com\/article\/doi\/10.1159\/neo\/adsag020"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,10,10]]},"references-count":0,"URL":"https:\/\/doi.org\/10.1159\/neo\/adsag020","archive":["Portico"],"relation":{"is-supplemented-by":[{"id-type":"doi","id":"10.6084\/m9.figshare.34231821","asserted-by":"subject"}]},"ISSN":["1661-7800","1661-7819"],"issn-type":[{"value":"1661-7800","type":"print"},{"value":"1661-7819","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,10,10]]}}}