Automatic Delineation Algorithms of ECG Atrial Electrical Activity Waves Based on the Continuous Wavelet Transform with Splines

This work presents algorithms based in the continuous wavelet transform with splines for the automatic delineation of the characteristic points of the P, Q and R waves. For the validation of the P wave start and end algorithm, 80 records from the QT database (QTDB) were used with manual annotations realized by experts, which were compared with the detections of the developed algorithms. The obtained errors were: 7.51 ± 7.23 ms for the start of P wave and 7.29 ± 5.86 ms for the end of P wave, which are below of the tolerance limits for deviations determined by the experts. The P and R waves peaks detection algorithms were evaluated with 18 and 11 records from QTDB respectively, and a sensitivity and positive predictivity over 99.5% were obtained.