D.I. Borodkin, O.V. Melnik, A.A. Mikheev, I.V. Paramoshin

The errors in the determination of statistical and spectral indices of heart rate caused by irregularity of cardiorhythmogram samples following and changes of number of elektrocardiosignal discrete samples relating to the variable area of the cardio interval at changes in heart rate variability and sampling frequency is investigated. It is shown that with increasing duration of the analyzed cardiorhythmogram with irregular samples following error in the determination of the spectral and statistical indicators tend to decrease, reaching a standard length of cardiorhythmogram recording (5 minutes) values of the units and fractions of a percent. Error in the determination of these parameters is also reduced at increase of heart rate variability and at increases of the elektrocardiosignal.