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A review of shockable arrhythmia detection of ECG signals using machine and deep learning techniques

Kavya Lakkakula, Karuna Yepuganti, Saritha Saladi, Prakash Allam Jaya, Patro Kiran Kumar, Sahoo Suraj Prakash, Tadeusiewicz Ryszard, Pławiak Paweł

International Journal of Applied Mathematics and Computer Science

2024

Vol. 34, no. 3

485--511

An electrocardiogram (ECG) is an essential medical tool for analyzing the functioning of the heart. An arrhythmia is a deviation in the shape of the ECG signal from the normal sinus rhythm. Long-term arrhythmias are the primary sources of cardiac disorders. Shockable arrhythmias, a type of life-threatening arrhythmia in cardiac patients, are characterized by disorganized or chaotic electrical activity in the heart’s lower chambers (ventricles), disrupting blood flow throughout the body. This condition may lead to sudden cardiac arrest in most patients. Therefore, detecting and classifying shockable arrhythmias is crucial for prompt defibrillation. In this work, various machine and deep learning algorithms from the literature are analyzed and summarized, which is helpful in automatic classification of shockable arrhythmias. Additionally, the advantages of these methods are compared with existing traditional unsupervised methods. The importance of digital signal processing techniques based on feature extraction, feature selection, and optimization is also discussed at various stages. Finally, available databases, the performance of automated algorithms, limitations, and the scope for future research are analyzed. This review encourages researchers’ interest in this challenging topic and provides a broad overview of its latest developments.

Zagrożenie migotaniem komór serca przy odkształconym prądzie rażeniowym

Czapp S.

Automatyka, Elektryka, Zakłócenia

2014

Vol. 5, Nr 4(18)

6-17

Przedstawiono zasady wyznaczania równoważnej wartości skutecznej prądu sinusoidalnego, który ze względu na migotanie komór serca wywoła takie same skutki, jak prąd odkształcony. Przeanalizowano wybrane przebiegi wyprostowane, przebiegi o sterowaniu fazowym oraz przebieg prądu ziemnozwarciowego silnika indukcyjnego zasilanego z przemiennika częstotliwości.

The principles of calculation of sinusoidal current, equivalent in terms of ventricular fibrillation, have been presented. The analysis of some rectified currents, phase controlled currents and earth fault current in motor circuit supplied via frequency converter was performed.