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Where's the Tube? Evaluation of Hand-held Ultrasound in Confirming Endotracheal Tube Placement

Published online by Cambridge University Press:  28 June 2012

Rosaleen Chun ,
Andrew W. Kirkpatrick ,
M. Sirois ,
A.E. Sargasyn ,
S. Melton ,
D.R. Hamilton  and
S. Dulchavsky
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Abstract

Introduction:

The diagnosis of endotracheal tube (ETT) mal-position may be delayed in extreme environments. Several methods are utilized to confirm proper ETT placement, but these methods can be unreliable or unavailable in certain settings. Thoracic sonography, previously utilized to detect pneumothoraces, has not been tested to assess ETT placement.

Hypothesis:

Thoracic sonography could correlate with pulmonary ventilation, and thereby, help to confirm proper ETT placement.

Methods:

Thirteen patients requiring elective intubation under general anesthesia, and data from two trauma patients were evaluated. Using a portable, hand-held, ultrasound (PHHU) machine, sonographic recordings of the chest wall visceral-parietal pleural interface (VPPI) were recorded bilaterally in each patient during all phases of airway management: (1) preoxygenation; (2) induction; (3) paralysis; (4) intubation; and (5) ventilation. Results: The VPPI could be well-imaged for all of the patients. In the two trauma patients, right mainstem intubations were noted in which specific pleural signals were not seen in the left chest wall VPPI after tube placement. These signs returned after correct repositioning of the ETT tube. In all of the elective surgery patients, signs correlating with bilateral ventilation in each patient were imaged and correlated with confirmation of ETT placement by anesthesiology.

Conclusions:

This report raises the possibility that thoracic sonography may be another tool that could be used to confirm proper ETT placement. This technique may have merit in extreme environments, such as in remote, prehospital settings or during aerospace medical transports, in which auscultation is impossible due to noise, or capnography is not available, and thus, requires further scientific evaluation.

Keywords

endotracheal tube placementportablehand-held ultrasoundpulmonary ventilationresuscitationthoracic ultrasound
Type
Brief Report
Information
Prehospital and Disaster Medicine , Volume 19 , Issue 4 , December 2004 , pp. 366 - 369
Copyright
Copyright © World Association for Disaster and Emergency Medicine 2004

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