The information technology for rapid determination life-threatening states of the cardiovascular system
DOI:
https://doi.org/10.52575/2687-0932-2021-48-1-130-141Keywords:
cardiovascular diseases, ECG, digital signal processing, mobile device, QRS complex, DTW methodAbstract
The paper examines data flow models and stages of digital signal processing in a mobile device for the operational determination of life-threatening conditions of the cardiovascular system. The device records the patient's signal electrocardiography (ECG) and analyzes various types of cardiac arrhythmias. When a life-threatening condition is detected, the device generates a message to the patient and transmits ECG data to the doctor's computer. A feature of this device is its personification and the reliability of the capabilities of the QRS complexes. Reliability is due to the fact that, in addition to approaches to the construction of digital signal processing algorithms, QRS comparison methods are also used, algorithms for comparing selected complexes with templates are used. An algorithm based on the dynamic time warping (DTW) method to analyze the shape QRS complex is used. If all the specified patterns are at a great distance from the highlighted QRS complex, then it is considered that this complex was highlighted in error. The DTW method is widely used for processing audio signals, in this context, its use is new.
Acknowledgements: the study was carried out with the financial support of the Russian Foundation for Basic Research, project No 18-413-310002.
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