The invention relates to a system for determining the risk of cardiac arrhythmia in an individual. This system comprises the measurement of physical parameters (VA, VB, VC, D1, Vequ) of the individual and comparing the measured physical parameters (VA, VB, VC, D1, Vequ) with physical reference parameters (VAref, VBref, D1ref, VequRef). A statistical correspondence between the cardinal parameters (C1-C6) and a level of risk of arrhythmia is selected. The risk of arrhythmia in the individual is determined from the statistical correspondence and a previously selected number of cardinal parameters corresponding to extra-cardiac parameters.
