|
KMID : 0385920170280010026
|
|
Journal of the Korean Society of Emergency Medicine
2017 Volume.28 No. 1 p.26 ~ p.31
|
|
|
A New Formula for Optimal Pediatric Endotracheal Tube Depth by Magnetic Resonance Imaging: Limited Study
|
|
Choi Eun-Ho
Oh Seong-Beom
Kim Tae-Hoon
|
|
|
Abstract
|
|
|
Purpose: The aim of this study is to propose a new, simplified formula using an upper incisor-sternal notch (UI-SN) to predict the airway length of optimal positioning of the endotracheal tube via a midsagittal magnetic resonance imaging (MRI) in pediatric patients.
Method: Between August 2000 and September 2014, a total of 56 pediatric patients (under 8 years old) who underwent MRI for C-spine or whole spine were included for analysis. Variables, such as curved airway length from upper incisor to carina (UI-C), straight length from upper incisor to sternal notch (UI-SN), and from the clivus to sternal notch (C-SN), were measured. Linear regression was used to analyze the relationship among these variables.
Results : The average age was 3.5±2.6, and there were 30 (53.6%) males. The mean airway length for UI-C and UI-SN was 16.0±2.8 and 8.8±2.1 cm, respectively. There was a close linear correlation between UI-C and UI-SN (p<0.001). By linear regression, a formula was obtained as UI-C (cm)=1.26×UI-SN (cm)+5.0 (R2=0.873).
Conclusion: The airway length from the upper incisor to the carina with the head placed in neutral position can be well predicted by a straight length from the upper incisor to the sternal notch. The proposed simplified formula (UI-C=1.26× UI-SN+5, cm) can provide good guidance in determining the optimal positioning of endotracheal tube in pediatric patients.
|
|
|
KEYWORD
|
|
|
Intubation, Pediatrics, Magnetic resonance imaging
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
  
|