Software Library for Real-Time Cardiac Beat Detection

This paper shows a software library with functionalities for real-time cardiac beats detection, which is defined by a facade pattern. An interface enlaces three detectors in a subsystem, all of them activated by a specific command. This design pattern assures the complexity of the software, warranting the portability and allowing changes in the subsystem components. The implemented detectors combine stateof-the-art algorithms of cardiac beats detection for improving performance. Assessments were made with the MIT-BIH Arrhythmia Database, totalizing 24 h of electrocardiogram (ECG). The results (up to 99.75% sensitivity and 99.85% positive predictivity for 0.41% detection fails) indicate better performances than the original algorithms. Keywordssoftware library; facade design pattern; cardiac beat detection; real-time monitoring.