Predicting Transthoracic Defibrillation Shocks Outcome in the Cardioversion of Atrial Fibrillation Employing Support Vector Machines

JD Diaz, OJ Escalona, NC Castro, JMCC Anderson, B Glover, G Manoharan

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

1 Citation (Scopus)

Abstract

In this work, we use support vector machines (SVM) to predict if a defibrillation shock is likely to be successful or not in the cardioversion of persistent AF patients. TheECG signals of 47 patients elected for electrical cardioversion treatment were collected at the Royal Victoria Hospital in Belfast city, NI-UK. Signal processing was performed on ECG segments prior each shock. Three electrocardiographic indexes were extracted and used as input: the dominant atrial fibrillatory frequency, the mean and the standard deviation of the R-R interval time series of the ECG segments. We trained SVM using about 40% of the data. SVM could predict the outcome of 89% of low-energy shocks below or = 100 [J], with a sensitivity (SE) of 87.50% and specificity (SP) of 98.8%. As a remarkable result, theoutcome of higher energy shocks (above or = 150 [J]) could be predicted with 100% exactitude.
Original languageEnglish
Title of host publicationUnknown Host Publication
Place of Publicationwww
PublisherIEEE
Pages741-744
Number of pages4
Volume37
Publication statusPublished - 15 Nov 2010
EventComputing in Cardiology - Belfast-UK
Duration: 15 Nov 2010 → …
http://www.cinc.org

Conference

ConferenceComputing in Cardiology
Period15/11/10 → …
Internet address

Keywords

  • AF Cardioversion
  • Atrial Fibrillation
  • AF Defibrillation
  • Support Vector Machine
  • Arrhythmia Treatment
  • ECG Time Series
  • QRS Cancellation

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  • Cite this

    Diaz, JD., Escalona, OJ., Castro, NC., Anderson, JMCC., Glover, B., & Manoharan, G. (2010). Predicting Transthoracic Defibrillation Shocks Outcome in the Cardioversion of Atrial Fibrillation Employing Support Vector Machines. In Unknown Host Publication (Vol. 37, pp. 741-744). www: IEEE.