Analysis of Heart Rate Variability Via Averaged Power Spectrum

Heart rate variability is nonstationary and shows 1/f fluctuation. Based on averaged power spectrum and least square algorithm, the deduced spectral parameter is further used to analyze the heart rate variability of congestive heart failure patients and normal people. The most spectral parameters corresponding to congestive heart failure patients are smaller than 1, and the most spectral parameters corresponding to normal people are larger than 1. This fact could provide an assistant method for the diagnosis and prediagnosis of cardiopathy.