Development of the spectral method for P-wave analysis on the electrocardiogram for the design of the heart arrhythmia portable analyzer

Constructing features of the modern arrhythmia analyzing devices is considered. The usage of the spectral analysis of the P-wave on the electrocardiogram is proposed to extend the list of heart arrhythmias to be diagnosed. A technique of carried out research is described to find the threshold of decisionmaking to distinguish groups of signals with normal and abnormal conduction of the electrical impulse. Found threshold values are given.