The invention relates to a medical device system comprising at least two technologies wherein at least one technology is based on galvanic skin response measurement and at least one technology is based on oximeter wave form measurement wherein software cross analyzes the results to assess a level of homeostasis and presents a homeostasis score. Preferably a pulse oximeter provides a vascular waveform using photoelectrical plethysmography in spectral analysis. Galvanic skin response is assessed using a change in voltage polarity during measurement. Preferably the system includes a) galvanic skin response, b) bioimpedance in tetrapolar mode c) oximeter sensor and d) blood pressure using oscillometric measurements.
