@Article{info:doi/10.2196/28366,
author="Yamanaka, Syunsuke
and Goto, Tadahiro
and Morikawa, Koji
and Watase, Hiroko
and Okamoto, Hiroshi
and Hagiwara, Yusuke
and Hasegawa, Kohei",
title="Machine Learning Approaches for Predicting Difficult Airway and First-Pass Success in the Emergency Department: Multicenter Prospective Observational Study",
journal="Interact J Med Res",
year="2022",
month="Jan",
day="25",
volume="11",
number="1",
pages="e28366",
keywords="intubation; machine learning; difficult airway; first-pass success",
abstract="Background: There is still room for improvement in the modified LEMON (look, evaluate, Mallampati, obstruction, neck mobility) criteria for difficult airway prediction and no prediction tool for first-pass success in the emergency department (ED). Objective: We applied modern machine learning approaches to predict difficult airways and first-pass success. Methods: In a multicenter prospective study that enrolled consecutive patients who underwent tracheal intubation in 13 EDs, we developed 7 machine learning models (eg, random forest model) using routinely collected data (eg, demographics, initial airway assessment). The outcomes were difficult airway and first-pass success. Model performance was evaluated using c-statistics, calibration slopes, and association measures (eg, sensitivity) in the test set (randomly selected 20{\%} of the data). Their performance was compared with the modified LEMON criteria for difficult airway success and a logistic regression model for first-pass success. Results: Of 10,741 patients who underwent intubation, 543 patients (5.1{\%}) had a difficult airway, and 7690 patients (71.6{\%}) had first-pass success. In predicting a difficult airway, machine learning models---except for k-point nearest neighbor and multilayer perceptron---had higher discrimination ability than the modified LEMON criteria (all, P≤.001). For example, the ensemble method had the highest c-statistic (0.74 vs 0.62 with the modified LEMON criteria; P<.001). Machine learning models---except k-point nearest neighbor and random forest models---had higher discrimination ability for first-pass success. In particular, the ensemble model had the highest c-statistic (0.81 vs 0.76 with the reference regression; P<.001). Conclusions: Machine learning models demonstrated greater ability for predicting difficult airway and first-pass success in the ED. ",
issn="1929-073X",
doi="10.2196/28366",
url="https://www.i-jmr.org/2022/1/e28366",
url="https://doi.org/10.2196/28366",
url="http://www.ncbi.nlm.nih.gov/pubmed/35076398"
}