Assessment of Cardiac Autonomic Function in Adulthood After Chemotherapy or Radiotherapy in Childhood

The description of autonomic equilibrium is based on the use of non-invasive tools such as Holter-ECG monitor (24 hours) which is suitable for longitudinal follow up of cohorts of patients. This tool allows the analysis of instantaneous or delayed variability of the heart rate, in the Hertzian frequency domain after extraction and mathematical transformation of a temporal sequence of R-R spaces from the ECG signal.