Please use this identifier to cite or link to this item: https://doi.org/10.1186/cc11396
Title: Prediction of cardiac arrest in critically ill patients presenting to the emergency department using a machine learning score incorporating heart rate variability compared with the modified early warning score
Authors: Hock Ong, M.E
Lee Ng, C.H
Goh, K
Liu, N 
Koh, Z.X
Shahidah, N
Zhang, T.T
Fook-Chong, S
Lin, Z
Keywords: adult
aged
article
clinical trial
controlled study
critically ill patient
emergency health service
female
heart arrest
heart rate variability
human
machine learning
major clinical study
male
Modified Early Warning Score
predictive value
priority journal
scoring system
sensitivity and specificity
tertiary health care
treatment outcome
artificial intelligence
cohort analysis
comparative study
critical illness
emergency health service
heart arrest
heart rate
middle aged
pathophysiology
physiology
prospective study
severity of illness index
standards
Aged
Artificial Intelligence
Cohort Studies
Critical Illness
Emergency Service, Hospital
Female
Heart Arrest
Heart Rate
Humans
Male
Middle Aged
Predictive Value of Tests
Prospective Studies
Severity of Illness Index
Issue Date: 2012
Citation: Hock Ong, M.E, Lee Ng, C.H, Goh, K, Liu, N, Koh, Z.X, Shahidah, N, Zhang, T.T, Fook-Chong, S, Lin, Z (2012). Prediction of cardiac arrest in critically ill patients presenting to the emergency department using a machine learning score incorporating heart rate variability compared with the modified early warning score. Critical Care 16 (3) : R108. ScholarBank@NUS Repository. https://doi.org/10.1186/cc11396
Abstract: Introduction: A key aim of triage is to identify those with high risk of cardiac arrest, as they require intensive monitoring, resuscitation facilities, and early intervention. We aim to validate a novel machine learning (ML) score incorporating heart rate variability (HRV) for triage of critically ill patients presenting to the emergency department by comparing the area under the curve, sensitivity and specificity with the modified early warning score (MEWS).Methods: We conducted a prospective observational study of critically ill patients (Patient Acuity Category Scale 1 and 2) in an emergency department of a tertiary hospital. At presentation, HRV parameters generated from a 5-minute electrocardiogram recording are incorporated with age and vital signs to generate the ML score for each patient. The patients are then followed up for outcomes of cardiac arrest or death.Results: From June 2006 to June 2008 we enrolled 925 patients. The area under the receiver operating characteristic curve (AUROC) for ML scores in predicting cardiac arrest within 72 hours is 0.781, compared with 0.680 for MEWS (difference in AUROC: 0.101, 95% confidence interval: 0.006 to 0.197). As for in-hospital death, the area under the curve for ML score is 0.741, compared with 0.693 for MEWS (difference in AUROC: 0.048, 95% confidence interval: -0.023 to 0.119). A cutoff ML score ? 60 predicted cardiac arrest with a sensitivity of 84.1%, specificity of 72.3% and negative predictive value of 98.8%. A cutoff MEWS ? 3 predicted cardiac arrest with a sensitivity of 74.4%, specificity of 54.2% and negative predictive value of 97.8%.Conclusion: We found ML scores to be more accurate than the MEWS in predicting cardiac arrest within 72 hours. There is potential to develop bedside devices for risk stratification based on cardiac arrest prediction. © 2012 Ong et al.; licensee BioMed Central Ltd.
Source Title: Critical Care
URI: https://scholarbank.nus.edu.sg/handle/10635/175334
ISSN: 1364-8535
DOI: 10.1186/cc11396
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