Browsing by Author "Kuhn, Eduardo Vinicius"
Now showing 1 - 2 of 2
Results Per Page
Sort Options
- Android-based ECG monitoring system for atrial fibrillation detection using a BITalino® ECG sensorPublication . Lazaretti, Gabriel Saatkamp; Teixeira, João Paulo; Kuhn, Eduardo Vinicius; Borghi, Pedro HenriqueCardiac arrhythmias are disorders that affect the rate and/or rhythm of the heartbeats. The diagnosis of most arrhythmias is made through the analysis of the electrocardiogram (ECG), which consists of a graphical representation of the electrical activity of the heart. Atrial fibrillation (AF) is the most present type of arrhythmia in the world population. In this context, this work deals with the implementation of a system for automatic analysis of ECG signals aiming to identify AF episodes. The system consists of a signal acquisition step performed by an ECG sensor connected to an acquisition platform. The acquired signal is transmitted via bluetooth to a smartphone with Android™ operating system. The signal processing is carried out through an application developed using the IDE Android™ Studio. When assessed over signals from the MIT-BIH Atrial Fibrillation database, the R-wave peak detection algorithm showed mean values of sensitivity and positive predictivity of 98.99% and 95.95%, respectively. The classification model used is based on a long short-term memory (LSTM) neural network and had an average accuracy of 94.94% for identifying AF episodes.
- Implementação de técnica para a detecção do complexo QRS em sinais de ECGPublication . Lazaretti, Gabriel Saatkamp; Bakri, Khaled Jamal; Kuhn, Eduardo Vinicius; Teixeira, João PauloEste artigo apresenta a implementação de um algoritmo para detecção automática dos batimentos cardíacos em sinais de eletrocardiograma (ECG). Tal algoritmo, baseado na transformada de wavelet, visa detectar a ocorrência do complexo QRS, considerando uma abordagem de decomposição em múltiplas escalas. A implementação proposta foi feita através do software MATLAB® e o banco de dados MIT-BIH Arrhythmia database (MITDB) foi utilizado para fins de validação. Resultados de simulação utilizando batimentos com diferentes características são apresentados, comprovando assim o funcionamento adequado da implementação proposta.