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A novel method to position an endotracheal tube at the correct depth using an infrared sensor stylet

Title
A novel method to position an endotracheal tube at the correct depth using an infrared sensor stylet
Author
오재훈
Keywords
Chest Radiography; Ultrasonic Sensor; Fibreoptic Bronchoscopy; Correct Depth; Human Esophagus
Issue Date
2013-05
Publisher
Springer
Citation
Canadian Journal of Anesthesia, May 2013, 60(5), P.444-449
Abstract
This study is a feasibility assessment to determine the ability of novice users to utilize an infrared (IR) sensor stylet as a guide to position the tip of the endotracheal tube (ETT) 40 mm proximal to the carina in the swine trachea. We developed a stylet system using an IR sensor attached to the tip of a stylet to facilitate measuring the distance of the ETT from the carina. The indicator lamp of the IR sensor system turns on through calibration when the ETT tip arrives at a point 20 mm proximal to the carina. In order to place the ETT tip 40 mm (middle of 20-60 mm) from the carina after the indicator lamp turns on, the operator uses the ETT marker to withdraw the ETT 20 mm. For this study, five fresh swine airways were used in random order after drawing lots, and ten novices were recruited to attempt the procedure ten times on each swine's airway. Five hundred endotracheal intubations were performed. For the target distance of 40 mm from the ETT tip to the carina, the mean (standard deviation) of the total data set was 37.9 (3.5) mm; all data were within a 20-60 mm range (500/500), and 98.2% (491/500) of the attempts fell within the 30-50 mm range. The IR sensor stylet system can facilitate correct positioning of the ETT tip at an appropriate depth above the carina in the swine trachea. Evaluation of the IR sensor stylet methodology in human subjects is warranted.
URI
https://link.springer.com/article/10.1007%2Fs12630-013-9898-6
ISSN
0832-610X; 1496-8975
DOI
10.1007/s12630-013-9898-6
Appears in Collections:
COLLEGE OF MEDICINE[S](의과대학) > MEDICINE(의학과) > Articles
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