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. 2023 Apr 25;13(9):1541. doi: 10.3390/diagnostics13091541

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© 2023 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Confirmation of Endotracheal Intubation with Ultrasound. (A) Place the transducer transversely on the anterior neck at the level of the suprasternal notch for the best visualization and diagnostic accuracy. (B) Tracheal ETT position: only one A–M interface (arrow) with comet tail artifact (arrowhead) and posterior shadowing is observed (C) Esophageal ETT position: two A–M interfaces (arrows) with comet-tail artifacts (arrowheads) and posterior shadowing are noted (the “double tract” sign).