Sistema portátil sem fio para monitoração de eventos adversos em eletrocardiograma

Abstract

According to data from 2012, the World Health Organization (WHO) states that heart disease is the leading cause of death on the planet. However, most heart diseases can be diagnosed and treated in advance, with the help of preventive tests. For this diagnosis, the most commonly used test is called an electrocardiogram (ECG) that may indicate arrhythmias. These can fall into two categories, one being formed by a single irregular heartbeat and another consisting of an irregular set of beats. Arrhythmias can be harmless, and even rare, but they can also lead to death. The earlier detected, the more effective your treatment. This work presents a wireless system, consisting of a hardware for acquisition of the electrocardiographic signal and sending of data using Bluetooth technology, a Windows desktop application for signal visualization and storage in text file, a tachycardia and bradycardia monitoring algorithm, and Arrhythmia detection, implemented in MATLAB® and a mobile Android application for signal acquisition and detection of Tachycardia and Bradycardia. Only the Windows application is able to save the sample and view it via Serial Communication, but the two applications developed allow visualization of the ECG via Bluetooth, while the algorithm implemented in MATLAB® also classifies the heart rate according to the presence or absence of adverse events, as does the Android application, verifies the presence of Arrhythmias. The validation of the system was done using the MITDB database BIH Arrhythmia, which in turn showed correctness in all the samples tested in the detection of arrhythmias, in comparison to the notes made by the cardiologists in the mentioned database.