Comparison Of The R-R Intervals In Ecg And Oximeter Signals To Be Used In Complexity Measures Of Natural Time Analysis

In this paper, we present a comparison of two non invasive digital systems. The one is a portable electrocardiograph (ECG) and the second a finger pulse Oximeter that was designed and assembled in our laboratory. The ultimate goal is to use a simple yet effective portable device such as an Oximeter with the prospect of calculating precisely the complexity measures of the heart rate regarding conditions leading to Sudden Cardiac Death (SCD), according to the "Natural Time Analysis ("N.T.A."). This analysis demonstrates that when a complex system, like the human heart, approaches the critical state, it can provide us information well before the moment that the event will occur, like the case of SCD which study in this presentation.