PhysioFlow is a range of non invasive hemodynamic monitors. They provide continuous, accurate, reproducible and sensitive measurements of cardiac output and other parameters. Their innovative and patented technology is based on the proprietary principles of signal morphology impedance cardiography (SM-ICG), which does not rely on the often inaccurate evaluations of chest impedance baseline (Z0). They also feature a high performance signal filter called HD-Z that stabilizes them even at maximal exercise intensity while keeping its definition and details. PhysioFlow is proven to work in demanding measurement conditions (highly instrumented ICU, maximal exercise, etc.) and difficult patients (obese, pulmonary oedema, emphysema etc.).