A Hidden Markov Model Approach for Ventricular Fibrillation Detection

Borja Altamira, Erik Alonso, Unai Irusta, Elisabete Aramendi, Mohamud Ramzan Daya

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Early detection and defibrillation of ventricular fibrillation (VF) has been associated with improved survival of out-of-hospital cardiac arrest (OHCA) patients treated with automated external defibrillators (AEDs). This study proposes a method for VF detection using ECGs obtained from OHCA patients. The dataset of the study contained 596 10-s ECG segments, 144 shockable and 452 non-shockable, from 169 OHCA patients. The dataset was split patient-wise into training (60%) and test (40%) sets. Each ECG segment was band-pass filtered (1-30 Hz), waveform features were computed and fed as observations to a Hidden Markov Model (HMM) that assigned each observation to one of the two hidden states, shockable or non-shockable. The number of possible observations was reduced using k-means clustering. The optimization of the method consisted of feature selection and optimization of the number of clusters through a forward greedy wrapping approach using patient-wise 10-fold cross validation in the training set. The performance of the method was computed in terms of sensitivity (SE) and specificity (SP) using the test set. This procedure was repeated 500 times to estimate the distributions of the performance metrics. The method showed a mean (SD) SE and SP of 94.4% (3.8) and 97.8% (1.2), respectively. The method is compliant with the American Heart Association requirements.

Original languageEnglish (US)
Title of host publicationComputing in Cardiology Conference, CinC 2018
PublisherIEEE Computer Society
ISBN (Electronic)9781728109589
DOIs
Publication statusPublished - Sep 1 2018
Event45th Computing in Cardiology Conference, CinC 2018 - Maastricht, Netherlands
Duration: Sep 23 2018Sep 26 2018

Publication series

NameComputing in Cardiology
Volume2018-September
ISSN (Print)2325-8861
ISSN (Electronic)2325-887X

Conference

Conference45th Computing in Cardiology Conference, CinC 2018
CountryNetherlands
CityMaastricht
Period9/23/189/26/18

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ASJC Scopus subject areas

  • Computer Science(all)
  • Cardiology and Cardiovascular Medicine

Cite this

Altamira, B., Alonso, E., Irusta, U., Aramendi, E., & Daya, M. R. (2018). A Hidden Markov Model Approach for Ventricular Fibrillation Detection. In Computing in Cardiology Conference, CinC 2018 [8743822] (Computing in Cardiology; Vol. 2018-September). IEEE Computer Society. https://doi.org/10.22489/CinC.2018.120