  This paper presents the evaluation of the effect of the method of ECG signal
encoding, based on nonlinear characteristics such as information entropy and
Lempel-Ziv complexity, on the distribution of cardiac arrhythmias. Initially
proposed a procedure electrocardiographic gating to compensate for errors
inherent in the process of filtering segments. For the evaluation of
distributions and determine which of the different encoding methods produces
greater separation between different kinds of arrhythmias studied (AFIB, AFL,
SVTA, VT, Normal's), use a function based on the dispersion of the elements on
the centroid of its class, the result being that the best encoding for the
entire system is through the method of threshold value for a ternary code with
E = 1 / 12.
