DOI:https://doi.org/10.15407/kvt196.02.003
Cybernetics and Computer Engineering, 2019, 2 (196), pp. 3-26
Fainzilberg L.S., DSc. (Engineering), Professor,
Chief Researcher of the Department of Intelligent Automatic Systems
e-mail: fainzilberg@gmail.com
International Research and Training Center for Information Technologies
and Systems of the National Academy of Sciences of Ukraine
and Ministry of Education and Science of Ukraine,
Acad. Glushkov av., 40, Kiev, 03187, Ukraine
Dykach Ju.R.2, Student, Faculty of Biomedical Engineering,
e-mail: jul.dykach@gmail.com
The National Technical University of Ukraine
«Igor Sikorsky Kyiv Polytechnic Institute»,
37, Peremohy av., Kyiv, 03056, Ukraine
LINGUISTIC APPROACH FOR ESTIMATION OF ELECTROCARDIOGRAMS’S SUBTLE CHANGES BASED ON THE LEVENSTEIN DISTANCE
Introduction. The linguistic approach, based on the transition from electrocardiogram (ECG) to codogram, gained fame for the analysis of heart rhythm. To expand the functionality of the method, it is advisable to study the possibility of simultaneously monitoring the dynamics of changes in the duration of cardiac cycles and the indicator of symmetry T-wave that carries information about ischemic changes in the myocardium.
The purpose of the article is to develop algorithmic and software components to solve this problem and conduct experimental studies on model and real data.
Methods. ECG of certain groups was automatically encoded, Levenshtein distance was calculated between ECG pairs for group and the reference codogram of the group was constructed. The evaluation of the results of experimental studies was carried out on the basis of traditional methods of statistical analysis.
Results. It is shown that based on the Levenshtein distance between all pairs of codograms of the test group, the reference codogram of the group of patients with coronary heart disease (CHD) and the group of healthy volunteers can be determined. It was established that making decisions based on the comparison of the ECG codogram of the person with the reference codogram allows for the separation of representatives of the indicated groups with sensitivity SE = 72% and specificity CP = 79% even in those cases when the traditional analysis of the ECG in 12 leads is not informative.
Conclusions. The proposed approach allows to obtain additional diagnostic information when solving actual problems of practical medicine.
Keywords: linguistic approach, diagnostic sign of ECG, Levenshtein distance.
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Received 01.04.2019