Heart Rate Variability monitor IC

For analysing the correct health status of heart, electrocardiogram (ECG) is one of the most important physiological parameter. Heart Rate Variability (HRV) obtained from QRS complex is a prominent tool for analysing various diseases. The aim of this paper is to describe an algorithm for finding average HRV for a given ECG signal and propose an Application Specific Integrated Circuit (ASIC) for the same. This algorithm first De-Noises the signal using standard time domain filters and then finds average HRV for time interval of every 8 seconds. In this way it reduces the ECG signal length to be analysed, without losing the original trend of variation in Heart Rate (HR). A wide range of ECG samples obtained from Physionet were used for testing the algorithm. The mean of correlation by this algorithm for a data set of more than 10 patients was found to be 0.9808.